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This Instant Pot red lentil soup is cozy, budget friendly, and easy to make with basic ingredients. It cooks quickly under pressure and has a soft, naturally creamy texture thanks to red lentils. The broth is layered with warm spices, lemon, and simple vegetables. Keep it vegan or add protein on the side if you prefer a heartier meal.

Warm bowl of Instant Pot red lentil soup topped with lemon, parsley, and chili flakes.

This is the kind of everyday soup that fits real life. One pot, minimal chopping, and dinner is on the table within about 30 minutes. It freezes well and reheats easily, so it is great for meal prep.

Why You Will Love This Red Lentil Soup

โ€ข High protein and naturally vegan
โ€ข Uses simple, inexpensive ingredients
โ€ข Cooks fast in the Instant Pot
โ€ข One pot and minimal cleanup
โ€ข Freezer friendly and great for batch cooking
โ€ข Easy to adapt with toppings or protein

Bright orange Instant Pot red lentil soup served in a white bowl, garnished with lemon and chopped parsley.

Ingredients You Will Need

Overhead view of Instant Pot red lentil soup ingredients in small bowls, including lentils, carrots, onion, garlic, tomato sauce, spices, oil, stock, and bay leaf.
  • 1 tablespoon neutral oil (olive, vegetable, or grapeseed)
  • 1 small onion, chopped (about 1/4 cup)
  • 4 garlic cloves, minced
  • 2 small carrots, diced (about 1/2 cup)
  • 1 small red pepper, finely chopped (optional)
  • 1 stalk celery, finely diced
  • 1/3 cup tomato sauce (or 1 tablespoon tomato paste)
  • 1 tablespoon lemon juice
  • 1 teaspoon ground cumin
  • 1 teaspoon smoked paprika or sweet paprika
  • 1/4 to 1/2 teaspoon turmeric
  • 1 teaspoon salt
  • 1/4 teaspoon black pepper
  • Pinch of white pepper (optional)
  • 1 1/2 cups red lentils, rinsed
  • 1 bay leaf (optional)
  • 5 cups vegetable or chicken stock

How To Make Instant Pot Red Lentil Soup

Step 1
Turn the Instant Pot to Saute and wait until hot. Add oil, onion, garlic, carrots, celery, and pepper if using. Cook about 5 minutes, stirring, until the vegetables soften.

A hot instant pot with sauteed onion, garlic and carrots.

Step 2
Stir in cumin, smoked paprika, turmeric, salt, black pepper, white pepper if using, and tomato sauce. Add rinsed lentils, lemon juice, stock, and bay leaf. Stir to combine and cancel Saute.

Vegetable stock added to red lentil soup before cooking in Instant pot.

Step 3
Close the lid and set the valve to Sealing. Cook on Manual High Pressure for 7 to 8 minutes.

Step 4
Do a Quick Release. Stir. For a thicker, softer texture, you can allow 10 to 15 minutes before releasing.

Step 5
Taste and adjust seasoning. Serve as is or blend with an immersion blender for a smoother texture.

Ingredient Notes

Red lentils
Split or whole work. Split cook slightly faster and break down quickly.

Vegetables
Chop small so they soften within the short pressure cook time.

Tomato element
Tomato sauce adds depth. Tomato paste also works.

Stock
Vegetable or chicken.

Lemon juice
Adds brightness.

Bay leaf
Optional.

Red Lentil Soup Recipe Tips

โ€ข Rinse lentils well until water runs clear
โ€ข Chop vegetables small so they soften quickly
โ€ข Smoked paprika adds more flavor than sweet paprika
โ€ข Quick Release keeps lentils from getting overly soft
โ€ข Stir in lemon at the end and adjust to taste
โ€ข Soup thickens as it cools. Thin with water or stock when reheating
โ€ข Chill and freeze flat for efficient storage
โ€ข Add pre cooked chicken or beef after pressure cooking if desired

Bowl of red lentil soup topped with lemon slice, parsley, and chili flakes.

Variations

โ€ข Add cooked chicken or beef
โ€ข Serve with quinoa or rice
โ€ข Add curry paste or hot sauce for spice
โ€ข Make it creamy with coconut milk
โ€ข Leave chunky or blend until smooth

What To Serve With Red Lentil Soup

โ€ข Green salad
โ€ข Toasted sourdough
โ€ข Naan or flatbread
โ€ข Grilled cheese

Storage

Refrigerate
Up to 3 days in a sealed container

Freeze
Up to 2 months

Reheat
Microwave or stovetop. Thin with a splash of water or stock if needed.

Frequently Asked Questions

Do I need to soak red lentils

No, red lentils do not need to be rinsed. Just rinse them.

Can I use green or brown lentils?

Yes, but increase cooking time to 13 to 15 minutes.

Can I make it spicy?

Add red pepper flakes, cayenne, hot sauce, or curry paste.

Can I use chicken stock?

Yes, chicken stock can be used in this recipe.

Can I freeze this soup?

Yes. Up to 2 months.

Should I blend this red lentil soup?

Optional. Blend all or partially for your preferred texture.

Spoonful of thick red lentil soup lifted from bowl, showing hearty texture and fresh parsley.
Warm bowl of Instant Pot red lentil soup topped with lemon, parsley, and chili flakes.
5 from 2 votes

Instant Pot Red Lentil Soup

Instant Pot red lentil soup that is fast, vegan, budget friendly, and ready in about 30 minutes. Made with simple vegetables, warm spices, and lemon.
Prep: 10 minutes
Cook: 13 minutes
Servings: 6 one cup servings

Equipment

  • Pressure cooker

Ingredients 

  • 1 tablespoon vegetable or grapeseed oil
  • 1 small onion, about 1/4 cup, chopped
  • 4 garlic cloves, minced
  • 2 small carrots, diced (about 1/2 cup)
  • 1 small red pepper, finely chopped (optional)
  • 1 stalk celery, finely diced
  • 1/3 cup tomato sauce or 1 tablespoon tomato paste
  • 1 tablespoon lemon juice
  • 1 teaspoon ground cumin
  • 1/4 to 1/2 teaspoon ground turmeric
  • 1 teaspoon smoked paprika or sweet paprika
  • 1 teaspoon salt
  • 1/4 teaspoon black pepper
  • Pinch of white pepper, optional
  • 1 1/2 cups red lentils, rinsed
  • 1 bay leaf, optional
  • 5 cups vegetable stock or chicken stock or bouillon

Instructions 

  • Set the Instant Pot to Saute and heat 1 tablespoon vegetable or grapeseed oil for 1 minute.
  • Add 1 chopped small onion, 4 minced garlic cloves, 2 diced small carrots, 1 finely chopped red pepper if using, and 1 diced celery stalk. Cook about 5 minutes, stirring often, until the vegetables soften.
  • Add 1 teaspoon ground cumin, 1/4 to 1/2 teaspoon turmeric, 1 teaspoon smoked paprika, 1 teaspoon salt, 1/4 teaspoon black pepper, a pinch of white pepper if using, and 1/3 cup tomato sauce. Stir to coat the vegetables.
  • Add 1 1/2 cups rinsed red lentils, 1 tablespoon lemon juice, 5 cups stock, and 1 bay leaf if using. Stir to combine and cancel Saute.
  • Close the lid, set the valve to Sealing, and cook on Manual High Pressure for 8 minutes.
  • Do a Quick Release or allow 10 to 15 minutes before releasing pressure for softer texture.
  • Stir and adjust seasoning. Serve as is or blend with an immersion blender for a smoother soup.

Nutrition

Calories: 218kcal, Carbohydrates: 36g, Protein: 13g, Fat: 3g, Saturated Fat: 0.3g, Polyunsaturated Fat: 2g, Monounsaturated Fat: 1g, Sodium: 522mg, Potassium: 733mg, Fiber: 16g, Sugar: 5g, Vitamin A: 4267IU, Vitamin C: 35mg, Calcium: 51mg, Iron: 4mg

Nutrition information is automatically calculated, so should only be used as an approximation.

Additional Info

Course: Soups
Cuisine: American
Tried this recipe?Mention @cookinglsl or tag #cookinglsl!

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Hi! I'm Mira.

I share simple, mostly low-carb and Keto recipes, that don't take a lot of time to make and use mostly seasonal, easy to find ingredients. I'm a supporter of healthy eating, but you'll also find some indulgent treats too.

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4 Comments

  1. I love this recipe and have made it many times. I make a batch on the weekend, and then eat it for a quick dinner during the week.