Instant Pot Lentil Soup
This Instant Pot Lentil Soup is a quick and comforting dish loaded with plant-based protein, veggies, and warming spices. A final splash of lemon juice brightens the flavors, and you’ll have a hearty, healthy soup that’s perfect for busy weeknights—ready in around 30 minutes from start to finish!
Prep Time10 minutes mins
Cook Time20 minutes mins
Total Time30 minutes mins
Course: Soup
Cuisine: American, French
Keyword: Plant-based
Servings: 6 people
Cost: $5
- 2 tablespoons olive oil
- 1 cup finely chopped onion about 1 medium onion
- ½ cup chopped carrot about 1 medium carrot
- ½ cup chopped celery about 1 stalk
- 2 cloves garlic minced
- 1 tablespoon tomato paste
- 3-4 teaspoon ground cumin about 1 tbsp
- 1 teaspoon curry powder
- 1 teaspoon dried thyme or 1 tablespoon fresh thyme
- 1 bay leaf
- 1 cup lentils brown, green, or black beluga, rinsed
- ½ bag frozen kale about 5–6 ounces
- 5 cups low-sodium vegetable or chicken broth adjust for thickness
- ½ lemon juiced
- Salt and black pepper to taste
Get Recipe Ingredients
Sauté the Aromatics
Set your Instant Pot to “Sauté.”
Add olive oil and heat until shimmering.
Sauté onion, carrot, and celery for 3–4 minutes or until onions are translucent.
Add minced garlic and cook for an additional 30 seconds, stirring frequently to prevent burning.
Add Tomato Paste & Spices
Stir in tomato paste, cumin, curry powder, thyme, and a pinch of salt and pepper.
Cook for about 30–60 seconds to allow the tomato paste to caramelize slightly and spices to become fragrant.
Combine Lentils & Kale
Add the rinsed lentils, frozen kale, and bay leaf to the pot.
Stir gently to combine with the sautéed ingredients.
Pour in the Broth
Add broth to the pot, scraping the bottom with a wooden spoon to release any browned bits (helps prevent a “Burn” notice).
Taste the liquid and adjust salt and pepper as needed.
Pressure Cook
Cancel the “Sauté” function.
Lock the Instant Pot lid in place, ensuring the valve is set to “Sealing.”
Pressure Cook (Manual) on High for 8 minutes. (It may take 10–12 minutes to reach pressure.)
Release Pressure
After the 8-minute cycle, allow 5 minutes of Natural Release, then perform a Quick Release for any remaining pressure.
Carefully remove the lid.
Finish & Serve
Remove the bay leaf.
Stir in the lemon juice for brightness.
Taste again and adjust seasonings (salt, pepper, or spices) if needed.
Serve hot with optional garnishes (fresh parsley or cilantro) and crusty bread.
- Thickness: If you prefer a thicker soup, reduce broth to about 4 cups initially and add more later if needed.
- Lentil Types: Brown, green, or black lentils hold their shape well. Red lentils cook faster and tend to break down (if using red, reduce cook time to 5 minutes).
- Substitutions: Spinach or Swiss chard can replace kale. Vegetable broth can replace chicken broth for a vegetarian or vegan option.
- Storage: Leftovers will keep in the fridge for 3–4 days and can be frozen for up to 3 months. Reheat with extra broth if it has thickened.
- Protein Boost: One cup of dried lentils contains around 48g of protein, meaning each serving offers roughly 8–12g (depending on portion size).
- Serving Suggestions Enjoy with a slice of crusty bread, cornbread, or a side salad. Top with fresh herbs (parsley, cilantro) or a drizzle of olive oil for extra flavor.