Sustainable Cooks
First Time Visiting? Start Here!

Instant Pot Lentil Soup {Vegetarian Lentil Soup}

This easy and healthy vegetarian Instant Pot Lentil soup is incredibly tasty and hearty!
a bowl of instant pot lentil soup with a slice of cheese bread

Free Guide Get 14 Recipes You Can Make From Your Pantry

This easy and healthy vegetarian Instant Pot Lentil soup is incredibly tasty and hearty! You’ll love that there are vegan lentil soup adaptations as well as crockpot instructions. 

a bowl of instant pot lentil soup with a slice of cheese bread

As an Amazon Associate, I earn from qualifying purchases.

Packed full of veggies and other delicious flavors, this Instant Pot lentil soup is going to knock your socks off!

You can make it in your Instant Pot, slow cooker, or on the stovetop. You can make it vegan, vegetarian, or omnivarian (<—- let’s call that a thing). It’s versatile and delicious and so easy to make!

Looking for more vegan/vegetarian soup recipes? Check out Spicy Vegan Butternut Squash Soup and Gluten-Free Tomato Soup. Check out all my Instant Pot Soup recipes for more inspiration. 

How Long Do Lentils Take in the Instant Pot?

You’re going to be cooking your lentils for only 12 minutes in this recipe. This recipe uses brown lentils, but you can also use green lentils and cook for the same amount of time. If you are going to be rocking some red lentils in this recipe, reduce the cooking time to 10 minutes.

If you have leftover dried lentils, use them later to make these incredible Lentil Nachos.

carrots, lentils, broth, and other ingredients for instant pot lentil soup

Do I Have to Soak the Lentils Before Cooking?

Heck no you don’t, not when using the Instant Pot! You will want to rinse them and remove any pebbles or debris that snuck their way into your bag of lentils.

But no soaking? Your life is about to rule!

Lentil Soup Ingredients

What’s in this soup? Pure heaven and unicorn dust. And um, lentils.

Make your prep even easier by learning how to freeze celery, how to freeze garlic and how to freeze onions.

Three photos showing how to make instant pot lentil soup

Serve with a side of Air Fryer Biscuits or Air Fryer Texas Toast and your life will be complete.

Pro Tips/Recipe Notes

  • This soup was made in an 8 quart Instant Pot. If you have another sized Instant Pot, the cooking time will be the same. Just make sure you don’t fill the inner pot more than two-thirds full.
  • As written, this recipe is vegetarian. Use a dairy-free pesto to make it vegan. 
  • Throw in some spinach at the end of the cooking time for some added greens.
  • This soup freezes like a boss! Pro tip: freeze in wide mouth pint mason jars for easy grab-and-go meals.
  • You can pump up the flavor by adding a few tablespoons of homemade tomato powder.
  • If you want to add meat, I’d recommend some leftover Instant Pot Ham.


a blue bowl of instant pot lentil soup with cheese bread and a spoon


One serving has 1 WW Freestyle SmartPoints.

a bowl of instant pot lentil soup with a slice of cheese bread
Print Recipe
5 from 21 ratings

Instant Pot Lentil Soup {Vegetarian Lentil Soup}

Prep Time15 mins
Cook Time40 mins
Total Time55 mins
This easy and healthy vegetarian Instant Pot Lentil soup is incredibly tasty and hearty!



Instant Pot Instructions

  • Add all the ingredients to the Instant Pot. Stir.
  • Place the lid on and switch it to the lock position. Switch the vent to "sealing".  Press Manual then High Pressure and adjust the time to 12 minutes. It will take around 10 minutes to get up to pressure.
  • When it has finished cooking, allow the pressure cooker to sit for 5 minutes. Then, carefully flip the steam release handle to “venting” and allow any additional pressure to be released.

Slow Cooker Instructions

  • Place all ingredients in your slow cooker and cook on low for 8 hours.

Stove Top Instructions

  • In a heavy-bottomed saucepan, combine olive oil, carrots, celery, and onions. Cook down for 10 minutes. Add garlic and cook for 5 minutes.
  • Add the remaining ingredients and cook on medium until lentils are soft (about 30 minutes).
Nutrition Facts
Instant Pot Lentil Soup {Vegetarian Lentil Soup}
Amount Per Serving (1 cup)
Calories 154 Calories from Fat 18
% Daily Value*
Fat 2g3%
Saturated Fat 1g6%
Cholesterol 1mg0%
Sodium 653mg28%
Potassium 588mg17%
Carbohydrates 27g9%
Fiber 11g46%
Sugar 5g6%
Protein 8g16%
Vitamin A 8748IU175%
Vitamin C 9mg11%
Calcium 60mg6%
Iron 3mg17%
* Percent Daily Values are based on a 2000 calorie diet.


Shop this Post:

(may include affiliate links)

Leave a Reply

Your email address will not be published.

Recipe Rating

This site uses Akismet to reduce spam. Learn how your comment data is processed.

63 comments on “Instant Pot Lentil Soup {Vegetarian Lentil Soup}”

  1. Add in some ham after the fact for a non veggie bit of deliciousness. Regular staple at our house now. 5 stars

  2. We like lentils fixed just about any way so today I made this soup after a weekend of “bad” choices. All my husband kept saying was, “Mmmm, mmmm, mmmm, mmmm!” Yep it was delicious!5 stars

  3. Hi Sarah, 
    This looks delicious. Do you think regular paprika would be ok instead of smoked paprika? I’m out of smoked paprika. And would you cut the recipe down for a 6 quart IP? Thanks so much!

    • Regular would be fine but it would be missing that awesome smoky flavor that I love. You might try just a pinch of cumin if you have any to replicate it. But you’ll still be great regardless!

      The recipe is designed for a 6 quart. I develop all my recipes for the 6 quart because they’re more common than my massive 8 quart. 🙂

  4. Yum yum yum! Thanks Sarah for a quick, tasty soup. This will be going on rotation as we head into winter and I go back to work. I think I can even trust my 4 year old (under supervision) or other half to make it.5 stars

    • I love that you lumped your 4-year-old and your spouse into the same group! 🙂

      So glad you loved the soup and thanks for taking the time to leave a review.

  5. Well…. this recipe floated past my eyes this morning and unusually I had just about got everything to make it without major substitutions. I have to thank you for your most excellent recipe, but I have to say also that the credit for such delicious soup is partly mine! I used some turkey stock and serrano ham bone stock as the base. I only had 6 cups, but the full quantity wouldn’t have fit in my 6 litre pot, 3/4 recipe was perfect.

    It looked completely different and wasn’t artistically presented like yours was as I put the veg through the chipper attachment of the food processor and then mashed a little, as my dd likes soup that is more of a puree.

    Another fab recipe Sarah!5 stars

    • So glad you enjoyed it Elisabeth! Thanks for taking the time to leave the review. 🙂

    • Mine came out more like a stew when doing it the insta pot method. Any suggestions?

      • What kind of lentils did you use Amanda? It’s definitely not a super brothy soup, but if it is super stewy, it makes me think that the lentils used weren’t the kind that holds their shape well (like brown or green). If you look at the photos in the post, there isn’t a lot of extra broth.

        Another culprit might be if you did a quick release as soon as it finished cooking. There is supposed to be a 5 minute “rest” before releasing the steam.

        I’m happy to troubleshoot this with you!

  6. Is the serving size 1 cup? I could not find it on the recipe! Looks so yummy! ????