Go Back
+ servings
Print Recipe
5 from 1 vote

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
Cook Time20 minutes
Total Time30 minutes
Course: Soup
Cuisine: American, French
Keyword: Plant-based
Servings: 6 people
Cost: $5

Ingredients

  • 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

Instructions

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.

Notes

  • 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.
QR Code linking back to recipe