Turn on the Instant Pot and select the “Sauté” function. Heat olive oil in the pot, add onions, and sauté for 2-3 minutes until translucent.
Add finely chopped garlic, carrot, and tomato. Cook for an additional 5-6 minutes while stirring occasionally.
Incorporate the spice mix and red lentils, stirring well for 1-2 minutes.
Pour in the vegetable stock and close the Instant Pot lid. Set the valve to the sealing position.
Select the “Pressure Cook” or “Manual” setting and set the timer for 10 minutes.
Once the cooking cycle is complete, allow natural pressure release for 10 minutes, then carefully switch the valve to the venting position to release any remaining pressure.
Open the lid, add salt and pepper to taste, and use an immersion blender to partially blend the soup until you achieve the desired consistency.
Serve with a drizzle of lemon and chopped coriander or parsley.