Preheat your oven to 350°F (175°C). Lightly coat a 9x13-inch (23x33 cm) baking dish with cooking spray.
In a medium saucepan, combine the rinsed quinoa and vegetable broth. Bring to a boil, then reduce heat, cover, and simmer for 15-20 minutes, or until the quinoa is cooked and the liquid is absorbed.
In a large mixing bowl, combine the cooked quinoa, black beans, corn, diced tomatoes, diced bell pepper, and taco seasoning mix. Mix well to evenly distribute the seasoning.
Season with salt and pepper to taste.
Transfer the quinoa and vegetable mixture into the prepared baking dish. Spread it evenly.
Sprinkle the shredded cheddar cheese evenly over the top.
Bake in the preheated oven for about 20-25 minutes, or until the cheese is melted and bubbly.
Serve hot, garnished with a dollop of low-fat sour cream, a drizzle of salsa, and a sprinkle of fresh cilantro leaves and sliced green onions for extra flavor and color.
This Vegetarian Weight Watchers Taco Casserole is a flavorful and wholesome dish that's perfect for those following the Weight Watchers plan. It's a delicious way to enjoy a satisfying meal without sacrificing taste or health.