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The Best Lentil Soup Recipe

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Lentil Soup will how you scraping the bowl. It’s packed full of taste and flavor and is the perfect hearty meal. The next time you’re looking for a slow cooker or Instant Pot lentil soup recipe, you don’t want to skip this one!

bowl of lentil soup

Craving more Instant Pot healthy soup recipes? Try our Keto Zuppa Toscana Instant Pot Soup with Wild Ramps and our Instant Pot Carrot Ginger Soup Recipe (Gluten-Free and Vegan)!

Lentil Soup

Lentil soup is great any time of the year. Make up a big serving to fill your belly after the end of a long day or work or fill up a mug and snuggle in front of the fireplace during the winter.

I love how filling this simple soup recipe really is. And when I make it, it makes such a big batch that I know I’m going to have leftovers for several days.

To me, that’s a big deal because leftovers are so helpful in meal planning for the week.

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soup ingredients on table

How to Make

You’ll find directions for both an electric pressure cooker and a slow cooker below. It’s up to you how to cook this delicious soup recipe. Or you can try it both ways and see which one you like better!

instant pot lentil soup

Instant Pot Lentil Soup

Step 1: Place all ingredients EXCEPT the kale in the electric pressure cooker and stir to combine. (If you are worried about getting a burn warning, place the tomatoes on top after you stir the remaining ingredients together. Then, do not stir in the tomatoes.)

Step 2: Cover and seal the pot. Select “manual” or “pressure cook” for 15 minutes. Allow the pressure to release naturally for 10 minutes prior to a quick release of the remaining pressure.

Step 3: Stir in the kale and allow it to wilt for 1 to 2 minutes.

Step 4: Serve with grated parmesan, if desired.

slow cooker lentil soup

Slow Cooker Lentil Soup

Step 1: Place all ingredients EXCEPT the kale in the slow cooker and stir to combine.

Step 2: Cover and cook on low for 8 hours.

Step 3: Stir in the kale and allow it to wilt for 1 to 2 minutes.

Step 4: Serve with grated parmesan, if desired.

Full directions and recipe is in the printable recipe card below. 

Do lentils need to be soaked?

They don’t. This is why so many people tend to cook with them. I do recommend rinsing them off though before adding them into your recipe to get rid of any dust and grime.

Is lentil soup healthy for weight loss?

You can easily switch out heavier carbs like rice for this protein-rich food. Since lentils are higher in protein, they’ll help you to feel fuller longer which can aid in helping you lose weight. The more full you feel, the less likely you are to snack.

There are also many different types of lentils as well. The most common type is green lentils and red lentils. The black lentils are considered to be the most healthy so that is another way that you can add some more healthy options to your daily diet.

vegetarian soup

How much does 1 cup of dry lentils make?

Since this recipe calls for 2 cups of dry lentils, it’s important to put it into perceptive. 1 cup of dry lentils will cook into about 2 1/2 cups of cooked lentils because they do expand in size once cooked.

How do you cook lentils so they are not mushy?

If you notice that your lentils are mushy, more than likely you’ve overcooked them. While they’re still edible, they will have a mushy texture to them for sure.

To not overcook them just follow the time given on the recipe. If you feel like they’re still overcooked at that point in time, you can scale back and alter the recipe as needed.

What is the quickest way to cook lentil soup?

Even though this recipe gives you options for a pressure cooker and slow cooker, the pressure cooking method is so much faster. We’re talking at least 7 hours quicker than cooking this lentil soup recipe in the slow cooker.

How do you store leftover lentil soup?

The easiest way to store this soup is to put it in the fridge in a container with a lid. That way you have easy access to it for leftovers and you can easily heat it up to eat over the next few days.

While this soup can be frozen, I really don’t recommend it because I think it alters the texture of the soup too much.

This is a simple Instant Pot soup recipe that you’re going to want to make over and over again.

bowl of lentil soup

Lentil Soup

Yield: 6-8
Prep Time: 10 minutes
Cook Time: 15 minutes
Additional Time: 10 minutes
Total Time: 35 minutes

Lentil Soup will how you scraping the bowl. It's packed full of taste and flavor and is the perfect hearty meal. The next time you're looking for a slow cooker or Instant Pot lentil soup recipe, you don't want to skip this one!

Ingredients

  • 1 onion, diced
  • ½ pound carrots, diced
  • 3 stalks celery, diced
  • 2 cups dried lentils
  • 2 cloves garlic, minced
  • 5 cups vegetable broth
  • ⅛ teaspoon red pepper flakes
  • 1 teaspoon salt
  • 2 teaspoons ground cumin
  • ½ teaspoon thyme
  • ½ teaspoon black pepper
  • 2 cups diced tomatoes
  • 2 cups crushed tomatoes
  • 3 cups kale, coarsely chopped

Instructions

  1. Place all ingredients EXCEPT the kale in the Instant Pot and
    stir to combine. (If you are worried about getting a burn warning, place the tomatoes on top after you stir the remaining ingredients together. Then, do not stir in the tomatoes.)
  2. Cover and seal the pot. Select “manual” or “pressure cook” for 15 minutes. Allow the pressure to release naturally for 10 minutes prior to a quick release of the remaining pressure.
  3. Stir in the kale and allow it to wilt for 1 to 2 minutes.
  4. Serve with grated parmesan, if desired.

Notes

SLOW COOKER Lentil Soup

  1. Place all ingredients EXCEPT the kale in the slow cooker and stir to combine.
  2. Cover and cook on low for 8 hours.
  3. Stir in the kale and allow it to wilt for 1 to 2 minutes.
  4. Serve with grated parmesan, if desired.

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Nutrition Information:
Yield: 6 Serving Size: 1
Amount Per Serving: Calories: 172Total Fat: 1gSaturated Fat: 0gTrans Fat: 0gUnsaturated Fat: 1gCholesterol: 0mgSodium: 1206mgCarbohydrates: 34gFiber: 11gSugar: 11gProtein: 10g

This information is automatically calculated by third-party software, including but not limited to the Create or Bake Me Some Sugar. For accurate nutrition, I suggest running the ingredients in your own system to get a more accurate reading. Nutritional information is approximate and automatically calculated, and should only be viewed as an indication.

lentil soup

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