A steaming bowl of rich brown Lentil Soup.

A lower-calorie way to make Lentil Soup

Hearty & Wholesome Lentil Soup

This Lentil Soup is crafted to be a deeply satisfying and nutrient-rich meal, naturally low in fat and packed with fiber and plant-based protein. By building flavor through aromatic vegetables and spices, it delivers warmth and substance without relying on heavy creams or excessive oils, making it a wholesome and comforting choice.

350 kcalestimated/serving
158 kcal · 31%less than reference
55 minprep to plate
2 servingsrecipe yield

Many traditional soups gain richness from added fats, cream, or calorie-dense ingredients. Lentil soup, by its nature, is often already quite wholesome. This version leans into the inherent goodness of lentils and vegetables, focusing on a robust flavor base to create a truly hearty and fulfilling meal without any unnecessary caloric additions. It showcases how simple, natural ingredients can yield profound depth and satisfaction.

The change that makes it lighterFocuses on naturally low-fat ingredients and uses only 10 ml olive oil for sautéing, avoiding additional fats or cream often used to enrich soups, thus keeping the fat content minimal.

What changes—and what stays

From 450-600 kcal per serving to 350 calories

Focuses on naturally low-fat ingredients and uses only 10 ml olive oil for sautéing, avoiding additional fats or cream often used to enrich soups, thus keeping the fat content minimal. Aromatic vegetables (mirepoix) form the foundation, deepened by earthy spices like cumin. The slow simmer allows the lentils to break down slightly, creating a naturally thick texture, while a touch of acidity from lemon juice brightens the overall profile, ensuring a well-rounded and comforting taste.

PartConventionalLighterWhy
Core methodMore added fat or a heavier proportionFocuses on naturally low-fat ingredients and uses only 10 ml olive oil for sautéing, avoiding additional fats or cream often used to enrich soups, thus keeping the fat content minimal.Aromatic vegetables (mirepoix) form the foundation, deepened by earthy spices like cumin. The slow simmer allows the lentils to break down slightly, creating a naturally thick texture, while a touch of acidity from lemon juice brightens the overall profile, ensuring a well-rounded and comforting taste.

How the flavor stays

Aromatic vegetables (mirepoix) form the foundation, deepened by earthy spices like cumin. The slow simmer allows the lentils to break down slightly, creating a naturally thick texture, while a touch of acidity from lemon juice brightens the overall profile, ensuring a well-rounded and comforting taste.

A cost rule that survives inflation

Lentils are an exceptionally economical and nutrient-dense protein source, and the use of common root vegetables makes this soup a very budget-friendly and sustainable meal option.

Ingredients for 2

Measure first; timing is part of how this recipe uses less fat.

Rinsed lentils in a colander next to diced mirepoix on a cutting board.
  • 180 gbrown or green lentils— rinsed
  • 10 mlolive oil
  • 100 gonion— diced
  • 80 gcarrots— diced
  • 80 gcelery— diced
  • 15 ggarlic— minced
  • 5 gground cumin
  • 1000 mlvegetable broth
  • 400 gcanned diced tomatoes— undrained
  • 15 mlfresh lemon juice
  • 2 gsalt
  • 1 gblack pepper

Method

Each step includes heat, a visible cue, and a recovery.

Rinsed lentils in a colander next to diced mirepoix on a cutting board.
1

Step 1 · follow the visible cue

Prepare Vegetables and Lentils

Rinse the lentils thoroughly under cold water. Dice the onion, carrots, and celery into small, uniform pieces. Mince the garlic. Have all your ingredients ready for sautéing.

Look for: Lentils are rinsed clean; all vegetables are uniformly diced.

Mirepoix and spices sautéing in a pot.
2

Step 2 · follow the visible cue

Build the Aromatic Base

Heat the olive oil in a large pot or Dutch oven over medium heat. Add the diced onion, carrots, and celery and cook for 7-10 minutes, stirring occasionally, until softened and fragrant. Stir in the minced garlic and ground cumin, cooking for another minute until aromatic.

Look for: Vegetables are tender-soft, and spices are fragrant.

Lentils, broth, and tomatoes simmering in a pot.
3

Step 3 · follow the visible cue

Simmer the Soup

Add the rinsed lentils, vegetable broth, and undrained canned diced tomatoes to the pot. Bring the mixture to a boil, then reduce the heat to low, cover, and simmer for 30-35 minutes, or until the lentils are tender. Stir occasionally to prevent sticking.

Look for: Lentils are soft and easily mashed; soup has slightly thickened.

Finished lentil soup in a bowl.
4

Step 4 · follow the visible cue

Finish and Serve

Remove the soup from the heat. Stir in the fresh lemon juice, 2 g salt, and 1 g black pepper. Taste and adjust seasoning as needed. Ladle the hot soup into bowls.

Look for: Soup is seasoned to taste, and the lemon brightens the flavors.

Step-by-step images showing the preparation of a hearty Lentil Soup, from chopping vegetables to the finished, garnished bowl.
AI-generated instructional imagery; it is not evidence of a physical kitchen test.

Calories at the same serving size

450-600 kcal per serving508 kcal
This recipe350 kcal

158 kcal · 31% lower estimated

The estimate uses the listed ingredients divided into 2 servings. Brand labels, trimming, and the amount left in the pan can change the result.

350 kcalCalories
20gProtein
50gCarbs
8gFat

Keep the leftovers in the same spirit

Store leftover lentil soup in an airtight container in the refrigerator for up to 4-5 days. It also freezes well for up to 3 months.

Store leftover lentil soup in an airtight container in the refrigerator for up to 4-5 days. It also freezes well for up to 3 months.

Frequently asked questions

My soup seems too thick/thin. How can I adjust the consistency?

If the soup is too thick, add a splash more vegetable broth or water until it reaches your desired consistency. If it's too thin, you can simmer it uncovered for a few more minutes to allow some liquid to evaporate, or mash a portion of the cooked lentils against the side of the pot to naturally thicken it.

Can I add other vegetables to this soup?

Yes, feel free to add other hearty vegetables like diced potatoes or sweet potatoes during the last 10-15 minutes of simmering.

9:41
CaloNote
Lunch12:30 PMAI Reanalyze
Lentil SoupEdit Mode
350kcal
C 50gP 20gF 8g
64%26%
Ingredients
  • brown or green lentils180 g
  • olive oil10 ml
  • onion100 g
  • carrots80 g
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Method and sources

Recipe development and nutrition review: CaloNote Editorial

This editorial recipe uses ingredient-level nutrition estimates and reviewed cooking principles. It is not represented as physically test-cooked, and nutrition is approximate.

Published and last reviewed: August 25, 2026

Make another familiar dinner lighter