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Crockpot zucchini casserole – best slow cooker recipe

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The best easy Crockpot Zucchini casserole recipe – This delightful casserole showcases the natural flavors and textures of zucchini, combined with a medley of aromatic vegetables and savory cheeses. It’s one of the best low carb meatless crock pot meals that’s also a great Keto zucchini casserole recipe. As the casserole slowly cooks in the crockpot, the zucchini becomes tender and absorbs all the delicious flavors, creating a satisfying and comforting dish. It’s a great recipe for the whole family. The simple ingredients in this zucchini recipe makes it one of the best slow cooker recipes all year round. Make it with tender yellow summer squash or use delicious green zucchini. It’s a great option for busy weeknight dinners, or a tasty cozy weekend meal.

The combination of zucchini, onion, garlic, red bell pepper, and cherry tomatoes brings a beautiful harmony of flavors and colors to the table. It’s a great easy recipe for any day of the week. The zucchini slices melt in your mouth, while the other vegetables add a delightful crunch and sweetness. The blend of dried basil and oregano infuses the casserole with a fragrant and herbaceous aroma that will tantalize your senses.

Why you are going to want to make this tasty Vegetarian Keto Crockpot Zucchini Casserole recipe on repeat

The cheesy goodness from the shredded mozzarella and grated Parmesan (or dairy-free alternatives) adds a creamy and indulgent element to the dish. The cheeses melt and create a luscious binding that holds all the ingredients together.

Whether you’re a vegetarian or simply looking for a wholesome and flavorful meal, this crockpot Zucchini casserole delivers on taste, nutrition, and convenience. It’s a perfect dish to enjoy on a cozy evening or serve as a side for a gathering with family and friends.

So get ready to savor each bite of this delicious vegetarian casserole, packed with vibrant flavors, nourishing ingredients, and a touch of cheesy goodness. It’s a dish that will leave you feeling satisfied, happy, and eager to have another helping. Enjoy!

What we’re covering in this tasty Crockpot Zucchini Casserole recipe

What we’re working with today to make one of the best zucchini cheese casserole recipes

Here’s a quick list of the ingredients you need to make crockpot Zucchini casserole:

Zucchini: Sliced into rounds, it serves as the main vegetable component of the casserole. Any type of zucchini works well in this easy slow cooker recipe. Green zucchini or yellow squash are both excellent! Use one or a combination of ingredients, or grab whatever fresh tender squash you can find at your local farmer’s market..

Onion: Chopped onion adds flavor and aroma to the dish. Alternatively, you can sub with green onions, red onions, shallots, or onion powder to add delicious onion flavor to the zucchini mixture casserole.

Garlic: Minced garlic adds a delicious savory taste to the casserole.

Red bell pepper: Chopped bell pepper adds color and sweetness to the dish. You can also substitute with green pepper, or use a mix of colors.

Cherry tomatoes: Halved cherry tomatoes provide bursts of juicy flavor. You can substitute with a jar of tomato sauce in the winter months.

Shredded mozzarella cheese: Adds a creamy and melty texture to the casserole. You can use a dairy-free alternative if desired.

Grated Parmesan cheese: Adds a savory and nutty flavor to the casserole. Dairy-free alternatives are available. Alternatively, you can use a rich cheddar cheese. You can also substitute with 3 tablespoons nutritional yeast.

Vegetable broth: Provides moisture and enhances the overall flavor of the dish.

Dried basil: Adds a pleasant herbal note to the casserole. Or use Italian seasoning to enhance the Mediterranean flavors of this tasty healthy recipe.

Dried oregano: Adds a savory and aromatic flavor to the dish.

Salt and black pepper: Enhances the overall seasoning and taste.

Fresh basil leaves (optional): Used as a garnish for added freshness and visual appeal.

These ingredients come together to create a flavorful and satisfying crockpot Zucchini casserole. Enjoy!

Tips and tricks for making the best crockpot squash casserole ever

Here are some tips and tricks to make the best vegetarian crockpot zucchini casserole:

1. Slice the zucchini evenly: To ensure even cooking, slice the zucchini into rounds of similar thickness. This helps to maintain consistency throughout the casserole. Place zucchini slices in the baking dish in layers to make it a delicious au gratin the entire family will enjoy!

2. Precook the onions and garlic: Sauté the chopped onions and minced garlic in a pan with a little oil before adding them to the crockpot. This step enhances their flavor and helps to soften them before slow cooking.

3. Layer the ingredients: Layer the sliced zucchini, onions, garlic, bell peppers, and cherry tomatoes in the crockpot. This allows the flavors to blend well and ensures even distribution of ingredients. It turns this delicious slow cooker ratatouille into a tasty zucchini lasagna recipe even picky eaters will love.

4. Season generously: Use a combination of dried basil, dried oregano, salt, and black pepper to season the casserole. Alternatively, you can use an Italian seasoning or Herb de Provence to give the au gratin a Mediterranean flavor. Adjust the seasonings to your taste preferences, and don’t be afraid to add a little extra flavor.

5. Choose the right cheese: Opt for a good-quality shredded mozzarella cheese or a dairy-free alternative if you prefer a vegan version. The cheese adds a creamy and savory element to the casserole.

6. Cook on low heat: Slow cooking allows the flavors to develop and the vegetables to become tender. Set your crockpot to low heat and let the casserole simmer gently for a few hours until the zucchini is cooked to your desired texture.

Extra tips

7. Garnish with fresh herbs: Just before serving, sprinkle some fresh basil leaves or fresh parsley over the casserole. The herbs add a pop of freshness and elevate the presentation and taste of the dish.

Remember to keep an eye on the cooking time and adjust it based on your crockpot’s settings and the desired tenderness of the zucchini. Enjoy your delicious vegetarian crockpot zucchini casserole!

Here’s a delicious vegetarian crockpot Zucchini casserole recipe. Make this delicious vegan or vegetarian zucchini crockpot casserole in a slow cooker or instant pot. It’s a fabulously versatile dish that’s equally delicious made as a instant pot zucchini casserole and keto crockpot casserole…because, yes! This tasty vegan zucchini casserole doubles as a healthy keto squash and zucchini casserole. Tasty, flavorful, and low carb. Yum!

Vegetarian crockpot Zucchini casserole Ingredients:

  • 4 medium zucchini, sliced into rounds
  • 1 onion, chopped
  • 2 cloves garlic, minced, or 2 tsp garlic powder
  • 1 red bell pepper, chopped
  • 1 cup (150g) cherry tomatoes, halved
  • 1 cup (100g) shredded mozzarella cheese (or dairy-free alternative)
  • 1/4 cup (25g) grated Parmesan cheese (or dairy-free alternative)
  • 1/4 cup (60ml) vegetable broth
  • 1 teaspoon dried basil
  • 1 teaspoon dried oregano
  • 1/2 teaspoon salt
  • 1/4 teaspoon black pepper
  • Fresh basil leaves, for garnish (optional)

How to make easy crockpot zucchini casserole Instructions:

1. In the crockpot, layer half of the zucchini rounds in the bottom of the slow cooker.

2. Add half of the onion, garlic, bell pepper, and cherry tomatoes on top of the zucchini.

3. Sprinkle half of the cheese (mozzarella and Parmesan cheese or cheese of your choice) over the vegetables.

4. Repeat the layers with the remaining ingredients: zucchini, onion, garlic, bell pepper, cherry tomatoes, and cheeses.

5. In a small bowl, whisk together the vegetable broth, dried basil, dried oregano, salt, and black pepper. Pour this mixture over the top of casserole.

6. Cover the crockpot and cook on low heat for 4-6 hours or until the zucchini is tender and the flavors have melded together.

7. Once cooked, remove cover, and garnish with fresh basil leaves if desired.

8. Serve the vegetarian Zucchini casserole as a main dish or as a side with your favorite grain or bread.

Enjoy your delicious vegetarian crockpot Zucchini casserole!

How to make zucchini casserole in an instant pot

Here’s a recipe for making vegetarian zucchini casserole in an Instant Pot:

How to make instant pot zucchini casserole Instructions:

1. Preheat the Instant Pot by selecting the sauté function. Add a little oil, then sauté the chopped onion and minced garlic until they become translucent.

2. Add the sliced zucchini, red bell pepper, and cherry tomatoes to the Instant Pot. Stir in the dried basil, dried oregano, salt, and black pepper.

3. Pour in the vegetable broth and give it a quick stir to combine all the ingredients.

4. Close the Instant Pot lid and set the vent to the sealing position. Select the manual/pressure cook function and set the timer for 2 minutes.

5. Once the cooking time is complete, do a quick pressure release by carefully turning the vent to the venting position.

6. Open the lid and sprinkle the shredded mozzarella cheese (or dairy-free alternative) and grated Parmesan cheese (or dairy-free alternative) over the cooked vegetables.

7. Close the lid again and allow the residual heat to melt the cheese for a couple of minutes.

8. Carefully remove the lid, and the zucchini casserole is ready to be served.

9. Garnish with fresh basil leaves, if desired, for added freshness and presentation.

Enjoy your delicious instant pot zucchini casserole! Adjust the seasonings and cooking time according to your taste preferences and the tenderness of the zucchini.

Delicious ways to serve Crockpot Zucchini casserole

Crockpot zucchini casserole can be enjoyed in various delicious ways. Here are some serving suggestions and delicious side dishes:

1. As a main dish: Serve the zucchini casserole as the main course alongside a fresh salad or crusty bread for a satisfying vegetarian meal.

2. Side dish: Pair the casserole with grilled or roasted meats, such as chicken or fish, to add a flavorful and nutritious side to your meal.

3. Brunch option: Serve the zucchini casserole as part of a brunch spread. It pairs well with other breakfast items like scrambled eggs, bacon, or toast.

4. Topping for grains: Spoon the zucchini casserole over cooked quinoa, rice, or pasta for a wholesome and filling vegetarian meal. You can even add some additional sautéed vegetables or protein of your choice.

5. Appetizer or party dish: Cut the casserole into smaller squares or bite-sized portions and serve them as appetizers at parties or gatherings. They make tasty finger foods that are easy to grab and enjoy.

6. Topped with fresh herbs: Sprinkle some fresh basil leaves or parsley over the casserole just before serving. The herbs add a vibrant touch and enhance the flavors of the dish.

Feel free to get creative and experiment with different serving ideas that suit your taste and occasion. Enjoy the versatility and deliciousness of your crockpot zucchini casserole!

Sides, sauces, and more to serve with zucchini crockpot casserole

How to tell the difference between cucumber and zucchini

Cucumbers and zucchinis may look similar, but there are a few key differences that can help you tell them apart:

1. Size and Shape: Cucumbers are usually longer and slimmer, while zucchinis are shorter and thicker. However, this can vary depending on the specific variety of each vegetable.

2. Color and Texture: Cucumbers typically have a bright green color, while zucchinis can range from light to dark green. The skin of cucumbers is smooth and may have ridges, while zucchinis often have a slightly bumpy or textured skin.

3. Skin Thickness: Cucumber skin is usually thinner and more tender, making it easier to bite into or peel. Zucchini skin is slightly thicker and firmer.

4. Taste and Texture: Cucumbers have a crisp and refreshing taste with a high water content. They are often eaten raw and have a mild, slightly sweet flavor. Zucchinis have a milder taste as well, but when cooked, they can develop a slightly sweet and nutty flavor. Zucchinis have a firmer texture and hold up better when cooked.

By considering these characteristics, you should be able to differentiate between cucumbers and zucchinis with ease.

How to tell if zucchini is ripe

To determine if a zucchini is ripe, you can look for the following signs:

1. Size: Ripe zucchinis are usually around 6 to 8 inches long, depending on the variety. They should have reached their mature size and not be overly small or underdeveloped.

2. Color: Ripe zucchinis have a vibrant, glossy green color. Avoid zucchinis that have a dull or yellowish appearance, as they may be overripe or past their prime.

3. Texture: Gently squeeze the zucchini. It should feel firm but slightly yielding, similar to the texture of a ripe cucumber. Avoid zucchinis that feel too soft or have mushy spots, as they may be overripe or spoiled.

4. Skin: The skin of a ripe zucchini should be smooth and free of blemishes, cuts, or bruises. Check for any signs of damage or mold, as these indicate that the zucchini is no longer fresh.

5. Seeds: Cut open the zucchini and check the seeds. A ripe zucchini will have small and soft seeds. If the seeds are large, tough, or starting to harden, the zucchini may be past its prime.

Remember that zucchinis are best when harvested young and tender, as they can become tougher and develop a more fibrous texture as they mature. It’s recommended to harvest zucchinis when they are around 6 to 8 inches long for optimal taste and texture.

How to tell if zucchini is bad

To determine if a zucchini is bad or spoiled, you can look for the following signs:

1. Mold or Discoloration: Check the surface of the zucchini for any signs of mold, especially around the stem or any damaged areas. Mold can appear as fuzzy spots or patches of green, white, or black. Discard zucchinis with mold as they are no longer safe to eat.

2. Soft or Mushy Texture: Gently squeeze the zucchini. If it feels excessively soft or mushy, it may have started to rot or decay. Fresh zucchinis should have a firm texture.

3. Wrinkled or Shriveled Appearance: If the skin of the zucchini appears wrinkled, shriveled, or excessively dry, it is an indication that it has lost moisture and freshness. This can happen when the zucchini is past its prime or has been stored improperly.

4. Foul Odor: Give the zucchini a sniff. If it emits a strong, unpleasant odor, it is likely spoiled. Fresh zucchinis should have a mild, slightly sweet scent.

5. Visible Signs of Decay: Inspect the zucchini for any visible signs of decay, such as dark, soft spots or areas that appear slimy. These are indications that the zucchini has started to break down and should be discarded.

If you notice any of these signs, it’s best to err on the side of caution and discard the zucchini to avoid any potential foodborne illnesses. Fresh zucchinis should be firm, vibrant in color, and have a mild aroma.

How to store vegetarian crockpot zucchini casserole

To store vegetarian zucchini casserole, follow these steps:

1. Allow the casserole to cool down to room temperature. 

2. Transfer any leftovers to an airtight container or individual meal prep containers.

3. Place the container(s) in the refrigerator.

4. The casserole can be stored in the refrigerator for up to 3-4 days.

When reheating the casserole, you can either microwave individual portions or warm it up in the oven. If using the oven, preheat it to a moderate temperature (around 350°F or 175°C) and bake until heated through. You may want to cover the dish with aluminum foil to prevent the top from drying out.

Remember to always use clean utensils when serving and avoid leaving the casserole at room temperature for an extended period of time to prevent foodborne illnesses. Enjoy your vegetarian crockpot zucchini casserole as leftovers and savor its flavors even on subsequent days!

FAQs – crockpot zucchini casserole

Can I use frozen zucchini in the crockpot zucchini casserole?

It’s best to use fresh zucchini for this recipe to maintain the texture and flavor. Frozen zucchini tends to release more water when cooked and may result in a watery casserole.

Can I substitute the cheese with a dairy-free alternative?

Absolutely! You can use dairy-free alternatives such as vegan mozzarella or nutritional yeast for a cheesy flavor. Adjust the quantities according to your taste preferences.

How do I prevent the casserole from becoming too watery?

To prevent excess moisture, you can sprinkle a little salt on the sliced zucchini and let it sit for a few minutes. Then, gently squeeze out any released water before layering it in the crockpot. Additionally, avoid overcrowding the crockpot, as this can trap steam and result in a watery casserole.

Cooking Crockpot Zucchini casserole questions answered

Can I make this recipe in the oven instead of a crockpot?

Yes, you can adapt the recipe for oven baking. Place the ingredients in an even layer in a casserole dish or 13-inch glass pan, cover with foil, and bake at around 375°F (190°C) for about 30-40 minutes, or until the zucchini is tender and the cheese is melted and bubbly

Meal prep: Can I make this recipe ahead of time?

Yes, you can prepare the casserole in advance and refrigerate it before cooking. When ready to cook, transfer the refrigerated casserole to the crockpot and follow the recipe instructions.

Customizations and more

Can I add other vegetables to the casserole?

Yes, feel free to customize the recipe by adding other vegetables like mushrooms, spinach, or bell peppers. Just ensure that the additional vegetables are compatible with the cooking time and won’t become too mushy. You can also top the casserole with a cream of mushroom soup to give it an extra layer of cozy savory flavor.

Freezing Zucchini guide

Can you freeze zucchini casserole

Yes, you can freeze zucchini casserole. Here’s how you can do it:

1. Allow the zucchini casserole to cool completely before freezing. It’s important to freeze it at the right temperature to maintain its quality.

2. Portion the casserole into individual servings or the desired portion size. This will make it easier to thaw and reheat later.

3. Place the portions in airtight freezer-safe containers or freezer bags. Make sure to remove as much air as possible to prevent freezer burn and wrap in plastic wrap if you are using unsealed containers.

4. Label the containers with the date and contents for easy identification.

5. Place the containers in the freezer and store them flat to save space. Make sure the temperature in your freezer is set at 0°F (-18°C) or below.

6. When you’re ready to enjoy the frozen zucchini casserole, remove the desired portion from the freezer and thaw it in the refrigerator overnight.

7. Once thawed, you can reheat the casserole in the oven, microwave, or stovetop until it’s heated through. Stirring occasionally during reheating can help distribute the heat evenly. Zucchini casserole is a great microwavable dish. 

Note: Freezing may slightly affect the texture of zucchini, as it tends to become softer when thawed. However, the flavor and overall taste of the casserole should still be enjoyable.

Pets and Zucchini questions

Can puppies eat zucchini

Yes, puppies can eat zucchini in moderation. Zucchini is generally safe for dogs, including puppies, as it is low in calories and contains beneficial nutrients. It can be a healthy addition to their diet when prepared properly.

When feeding zucchini to puppies, it is important to:

1. Cook it: Raw zucchini may be difficult for puppies to digest, so it’s best to cook or steam it before offering it to them. This helps soften the texture and makes it easier to chew and digest.

2. Cut it into appropriate sizes: Cut the zucchini into small, bite-sized pieces that are suitable for your puppy’s age and size. This reduces the risk of choking and makes it easier for them to eat.

3. Introduce it gradually: When introducing any new food to your puppy, including zucchini, do it gradually and in small amounts. Observe their reaction and ensure they tolerate it well without any digestive upset or allergies.

4. Avoid seasonings and additives: It’s important to feed plain, unseasoned zucchini to your puppy. Avoid adding any spices, oils, or seasonings that may be harmful to them.

Remember, while zucchini can be a healthy addition to your puppy’s diet, it should not replace their regular balanced puppy food. Consult with your veterinarian for specific feeding guidelines and to ensure that zucchini is appropriate for your puppy’s individual needs.

Are you looking for more delicious zucchini recipes? You might like some of these

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Crockpot zucchini casserole – best slow cooker recipe

The best easy Crockpot Zucchini casserole recipe – This delightful casserole showcases the natural flavors and textures of zucchini, combined with a medley of aromatic vegetables and savory cheeses. It’s one of the best low carb meatless crock pot meals that’s also a great Keto zucchini casserole recipe. As the casserole slowly cooks in the crockpot, the zucchini becomes tender and absorbs all the delicious flavors, creating a satisfying and comforting dish. It's a great recipe for the whole family. 
Prep Time 8 minutes
Cook Time 5 hours
Servings 5 – 6 people
Calories 307kcal
Author Simone – Munchyesta.com

Ingredients

  • 4 medium zucchini sliced into rounds
  • 1 onion chopped
  • 2 cloves garlic minced, or 2 tsp garlic powder
  • 1 red bell pepper chopped
  • 1 cup (150g) cherry tomatoes, halved
  • 1 cup (100g ) shredded mozzarella cheese (or dairy-free alternative)
  • 1/4 cup (25g) grated Parmesan cheese (or dairy-free alternative)
  • 1/4 cup (60ml ) vegetable broth
  • 1 teaspoon dried basil
  • 1 teaspoon dried oregano
  • 1/2 teaspoon salt
  • 1/4 teaspoon black pepper
  • Fresh basil leaves for garnish (optional)

Instructions

How to make easy crockpot zucchini casserole Instructions:

  • In the crockpot, layer half of the zucchini rounds in the bottom of the slow cooker.
  • Add half of the onion, garlic, bell pepper, and cherry tomatoes on top of the zucchini.
    Sprinkle half of the cheese (mozzarella and Parmesan cheese or cheese of your choice) over the vegetables.
  • Repeat the layers with the remaining ingredients: zucchini, onion, garlic, bell pepper, cherry tomatoes, and cheeses.
  • In a small bowl, whisk together the vegetable broth, dried basil, dried oregano, salt, and black pepper. Pour this mixture over the top of casserole.
  • Cover the crockpot and cook on low heat for 4-6 hours or until the zucchini is tender and the flavors have melded together.
  • Once cooked, remove cover, and garnish with fresh basil leaves if desired.
    Serve the vegetarian Zucchini casserole as a main dish or as a side with your favorite grain or bread.
    Enjoy your delicious vegetarian crockpot Zucchini casserole!

How to make zucchini casserole in an instant pot

  • Preheat the Instant Pot by selecting the sauté function. Add a little oil, then sauté the chopped onion and minced garlic until they become translucent.
  • Add the sliced zucchini, red bell pepper, and cherry tomatoes to the Instant Pot. Stir in the dried basil, dried oregano, salt, and black pepper.
  • Pour in the vegetable broth and give it a quick stir to combine all the ingredients.
  • Close the Instant Pot lid and set the vent to the sealing position. Select the manual/pressure cook function and set the timer for 2 minutes.
  • Once the cooking time is complete, do a quick pressure release by carefully turning the vent to the venting position.
    Open the lid and sprinkle the shredded mozzarella cheese (or dairy-free alternative) and grated Parmesan cheese (or dairy-free alternative) over the cooked vegetables.
    Close the lid again and allow the residual heat to melt the cheese for a couple of minutes.
  • Carefully remove the lid, and the zucchini casserole is ready to be served.
    Garnish with fresh basil leaves, if desired, for added freshness and presentation.
    Enjoy your delicious instant pot zucchini casserole! Adjust the seasonings and cooking time according to your taste preferences and the tenderness of the zucchini.

Notes

How to store vegetarian crockpot zucchini casserole 
To store vegetarian zucchini casserole, follow these steps:
1. Allow the casserole to cool down to room temperature. 
2. Transfer any leftovers to an airtight container or individual meal prep containers.
3. Place the container(s) in the refrigerator.
4. The casserole can be stored in the refrigerator for up to 3-4 days.
When reheating the casserole, you can either microwave individual portions or warm it up in the oven. If using the oven, preheat it to a moderate temperature (around 350°F or 175°C) and bake until heated through. You may want to cover the dish with aluminum foil to prevent the top from drying out.

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