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Home » Instant Pot Recipes » Soups

Low Calorie Soup With Vegetables & Lentils (Instant Pot or Stovetop)

Published: Apr 17, 2022 · Modified: Jan 8, 2024 by Irena Macri · This post may contain affiliate links · 15 Comments

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Inspired by the cabbage soup diet recipe but with more substance and flavor, this Instant Pot low-calorie soup is filled with vegetables and lentils, providing plenty of fibre and just enough protein to keep you satiated. It's a light, healthy soup with around 100 calories per serve and is perfect if you're having to restrict calories or doing a fasting 5:2 diet; or if you simply need a little cleansing meal after an overindulging weekend.


Instant Pot Low Calorie Vegetable Lentil Soup
JUMP TO
  1. Low-Calorie Soup Benefits
  2. Ingredients For Vegetable Lentil Soup
  3. How To Make Low-Calorie Soup In Instant Pot
  4. Stovetop Method
  5. How To Store Vegetable Soup
  6. More Healthy Instant Pot Soup Recipes
  7. Low-Calorie Soup With Vegetables & Lentils (Instant Pot or Stovetop)

Low-Calorie Soup Benefits

  • Filled with vegetables, fibre and protein-rich lentils and made with no added fats or oil, this cleansing soup comes at around 100 calories per serve (a generous cup). 
  • It's light yet nutritious containing 10 vegetables and legumes, well known for their longevity and health benefits. 
  • It's surprisingly satiating and has a great flavor with a little spice kick.
  • Super easy to make and great for batch cooking and meal prepping. You can store it in individual portions in the fridge for up to 5 days or freeze it for later.
  • Suitable for low-calorie diets, intermittent fasting 5:2 diet, Weight Watchers, gluten-free and vegan needs. 
Vegetable Lentil Soup (Instant Pot Recipe, Low-Calorie)

Ingredients For Vegetable Lentil Soup

This is a very forgiving soup recipe that you can use with pretty much any vegetables, herbs and spices you have.

  • Vegetables: we used a variety of low-calorie vegetables with the addition of 1 medium potato, you can swap things based on what you have on hand. Dice or chop everything into similar sized cubes. Prepping the vegetables is the part that takes the longest, the rest is easy peasy and very quick! 
  • Legumes: canned lentils are low in calories and high in fibre and plant-based protein making them a fantastic ingredient for this soup. You can use chickpeas or white beans instead. 
  • Seasonings and aromatics: onion and garlic, dried herbs (you can use whatever you have in the pantry), salt, pepper and a mild curry powder which compliments the tomatoes and gives this soup a nice spice kick. You can substitute curry for paprika or cumin, or a mix. A little splash of soy sauce for extra umami flavor. 
  • Liquids: canned tomatoes, water and vegetable stock cubes for extra flavor.
Healthy vegetable soup ingredients
Low Calorie Soup Ingredients

How To Make Low-Calorie Soup In Instant Pot

You will find the full recipe with ingredients and nutritional breakdown in the recipe card below. Here are some handy step-by-step photos of how to cook this healthy soup. You can use a 6-quart or 8-quart Instant Pot. For Instant Pot mini, halve the ingredients.

  • Step 1. Wash and dice all the vegetables, onion and garlic. This will take you the longest but is well worth it!
  • Step 2. Once done, add all vegetables to the Instant Pot or a large saucepan if made on a stovetop. No oil or sauteeing is happening in this recipe as we want to keep the calories down!
  • Step 3. Now add all the herbs, spices, salt and pepper, crumbled stock cubes, soy sauce, drained lentils and chopped canned tomatoes. Follow with 1 litre of water (4 x 250 ml cups) and stir through well.
How to make low calorie soup step 1 - add all the veggies and spices
Lentils and vegetables in the Instant Pot
Add liquid and stir everything together
  • Step 4. Secure and lock the lid. Select Pressure Cook/Manual and adjust the time to 3 minutes on HIGH pressure. Yes, it's that quick, however, it will take about 10-15 minutes to build up the pressure in the post due to all the food and liquid.
  • Step 5. Once the timer is done, leave on natural release for about 5 minutes. You could let it release by itself all the way. Otherwise, use the quick release and open the pot.
Cooking vegetable soup Instant Pot pressure cooking step
Ready soup after cooking
  • Step 6. Stir the soup and taste for salt. Stir in a little lemon zest and juice if you prefer a little more tang. Top with fresh chopped parsley and serve.
Healthy Vegetable Soup With Parsley on top

Stovetop Method

Follow the first couple of steps as above. Once everything is in the pot, place it on medium heat and cover it with a lid. Bring to a boil, then turn the heat down to medium-low and cook, covered, for 15 minutes, or until the potato is soft to bite. Once cooked, let it sit for a few minutes before finishing it with some lemon zest, lemon juice (if you like more tang) and fresh parsley. Feel free to season with more salt and pepper.

How To Store Vegetable Soup

  • Divide the soup into containers (individual portions are very handy) and let it cool down. Store airtight in the fridge for up to 5 days and reheat until very hot. 
  • Follow the above instructions for the freezer. Label the containers and store them once cooled down completely. Freeze for up to 3 months. Defrost in the fridge overnight, in a microwave or directly in the pot over low-medium heat. 
How to freeze vegetable soup

More Healthy Instant Pot Soup Recipes

  • Healthy Zuppa Toscana
  • Pasta e Fagioli Soup (Past & Beans)
  • Italian Farmhouse Vegetable Soup
  • Cream Of Zucchini Soup
  • Instant Pot Greek Chicken Lemon Soup Avgolemono (with VIDEO)
Low Calorie Soup With Vegetables & Lentils (Instant Pot or Stovetop)

Rate This Recipe

5 from 5 votes

Low-Calorie Soup With Vegetables & Lentils (Instant Pot or Stovetop)

This stovetop or Instant Pot cooked low-calorie soup with vegetables and lentils has loads of veggies, fibre and protein-rich lentils and is made with no added oil or sugar. It's naturally low in calories and full of nutrients and flavor. Perfect for healthy eating, Weight Watchers or fasting 5:2 diets, and it's gluten-free and vegan-friendly. around 100 calories per serving in this healthy vegetable lentil soup.
Print Recipe Pin Recipe
Prep Time20 minutes mins
Cook Time15 minutes mins
Total Time35 minutes mins
Servings: 8 cups
Calories: 119kcal

Ingredients

  • 2 cups white cabbage about 200 grams, diced
  • 2 cups spinach English or baby, diced
  • 1 cup carrot 1 large, diced
  • 1 cup celery 1.5 stalks, diced
  • 1 cup green beans 3 oz. / 100 grams, diced
  • 1 ½ zucchini 1 medium zucchini, diced
  • 1 white potato 1 medium, diced into cubes
  • ½ yellow onion diced finely
  • 3 cloves garlic diced
  • 1 teaspoon salt
  • ½ teaspoon pepper
  • 1 tablespoon soy sauce or Tamari
  • 1 teaspoon dried mixed herbs
  • 1 teaspoon mild curry powder
  • 2 cubes of vegetable stock
  • 1 can diced tomatoes about 14 oz.
  • 14 oz cooked lentils about 1 x 14 oz can, drained
  • 4 cups water 1 litre

To finish: 

  • ¼ cup chopped parsley or cilantro
  • Zest of ½ lemon
  • Juice of ½ lemon

Instructions

  • Wash and dice all the vegetables, onion and garlic. This will take you the longest but is well worth it!
  • Once done, add all vegetables to the Instant Pot or a large saucepan if made on a stovetop. No oil or sauteeing is happening in this recipe as we want to keep the calories down!
  •  Now add all the herbs, spices, salt and pepper, crumbled stock cubes, soy sauce, drained lentils and chopped canned tomatoes. Follow with 1 litre of water (4 x 250 ml cups) and stir through well.
  • Secure and lock the lid. Select Pressure Cook/Manual and adjust the time to 3 minutes on HIGH pressure. Yes, it's that quick, however, it will take about 10-15 minutes to build up the pressure in the post due to all the food and liquid.
  • Once the timer is done, leave on natural release for about 5 minutes. You could let it release by itself all the way. Otherwise, use the quick release and open the pot.
  • Stir the soup and taste for salt. Stir in a little lemon zest and juice if you prefer a little more tang. Top with fresh chopped parsley and serve.

STOVETOP METHOD

  • Follow the first couple of steps as above.
  • Once everything is in the pot, place it on medium heat and cover it with a lid. Bring to a boil, then turn the heat down to medium-low and cook, covered, for 15 minutes, or until the potato is soft to bite.
  • Once cooked, let it sit for a few minutes before finishing it with some lemon zest, lemon juice (if you like more tang) and fresh parsley. Feel free to season with more salt and pepper.

Notes

You can serve this soup as is or add croutons or grated cheese for extra calories. 
Using dry lentils: You can use dry lentils but we recommend cooking them first in the Instant Pot. Rinse 1 cup of dry lentils and add to the Instant Pot with 3 cups of water and a few pinches of salt. Cook for 5 minutes on HIGH with quick release. Strain and then follow the recipe with pre-cooked lentils. They will be al dente but will cook further in the soup. The reason for pre-cooking lentils is that vegetables only did a short cooking time which would not be long enough for lentils if made altogether.

Nutrition

Calories: 119kcal | Carbohydrates: 23g | Protein: 7g | Fat: 1g | Saturated Fat: 0.1g | Polyunsaturated Fat: 0.2g | Monounsaturated Fat: 0.1g | Sodium: 703mg | Potassium: 678mg | Fiber: 7g | Sugar: 6g | Vitamin A: 3691IU | Vitamin C: 29mg | Calcium: 76mg | Iron: 3mg
CourseSoup
Cuisinehealthy
Keyword5:2 diet, Diet, Gluten-Free, Healthy Soup, Soup Recipes, Vegan, Vegetables, Vegetarian, Weight Watchers
Made this recipe?Mention @instantpoteats or tag #instantpoteats!
Low- Calorie Soup With Lentils & Vegetables (Instant Pot or Stovetop)

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Reader Interactions

Comments

  1. Jacqueline Meldrum

    May 20, 2022 at 7:08 am

    This is my kind of soup. I love a veg- packed soup.

    Reply
    • Ann Fabrizio

      May 23, 2022 at 3:06 am

      We love veggies too!

      Reply
  2. Ieva

    May 20, 2022 at 6:50 am

    Made this soup yesterday for a light lunch. And I was amazed at how filling and flavoursome it was with not too many calories. Really nice soup, no bread needed to go with it - perfectly lovely on its own! Thanks for the recipe.

    Reply
    • Ann Fabrizio

      May 23, 2022 at 3:07 am

      Awww thanks for the feedback. Really appreciate it!

      Reply
  3. kushigalu

    May 20, 2022 at 6:35 am

    Love how flavorful and delicious this soup is. Perfect for the weather here. Thanks for sharing.

    Reply
    • Ann Fabrizio

      May 23, 2022 at 3:06 am

      Glad you enjoyed it! thanks.

      Reply
  4. Andrea

    May 20, 2022 at 2:21 am

    This looks like a delicious vegetable soup! I'm going to substitute chard for the spinach. Yum!

    Reply
  5. Liza

    May 20, 2022 at 1:43 am

    What a fantastic recipe! It's so great to be able to make this hearty, nutritious, flavorful soup in the instant pot. So glad it's gluten free, too. Another winner from Instant Pot Eats!

    Reply
    • Instant Pot Eats

      May 20, 2022 at 5:29 am

      Thank you!

      Reply
  6. Mary Ann Solomon

    April 23, 2022 at 4:23 pm

    How would this recipe be adjusted if using dried lentils?

    Reply
    • Instant Pot Eats

      April 26, 2022 at 5:54 am

      Adding this as a note in the recipe card!

      Reply
  7. Cheryl

    April 21, 2022 at 8:05 pm

    I only have uncooked lentils. How would I change the cooking process? Thanks!

    Reply
    • Instant Pot Eats

      April 26, 2022 at 5:54 am

      Hey, you can use dry lentils but we recommend cooking them first in the Instant Pot (1 cup lentils in 3 cups water for 5 minutes on HIGH, quick release), straining and then following the recipe with pre-cooked lentils. They will be al dente but will cook further in the soup. The reason is that vegetables only did a short cooking time which would not be long enough for lentils if cooked all together. I will add this note to the recipe itself!

      Reply
  8. CuscoKitty

    April 19, 2022 at 2:16 pm

    Can you use dried lentils

    Reply
    • Instant Pot Eats

      April 26, 2022 at 5:52 am

      Hey, you can use dry lentils but we recommend cooking them first in the Instant Pot (1 cup lentils in 3 cups water for 5 minutes on HIGH, quick release), straining and then following the recipe with pre-cooked lentils. They will be al dente but will cook further in the soup. The reason is that vegetables only did a short cooking time which would not be long enough for lentils if cooked altogether.

      Reply

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