A lower-calorie way to make Lentil Soup
Lentil Soup thickens from one mashed ladle—not flour or cream
Brown lentils, tomatoes, root vegetables and greens make a thick one-pot soup for about 345 calories per filling Canadian serving.
Lentil soup becomes either watery or pasty when every lentil is treated the same. This pot keeps most lentils intact and mashes one ladle against the side only after they are tender. Carrots and celery first take on a little colour, tomato paste cooks until sweet, and lemon enters after the heat. The result is thick enough for dinner without a roux.
What changes—and what stays
From often 430–600 calories with sausage, cream or large bread sides to 345 calories
Build thickness by mashing one ladle of cooked lentils, keep oil to twelve grams, and use greens rather than sausage to finish the pot. Browned vegetables and toasted tomato paste provide dark notes, cumin warms the lentils and lemon added at the end restores brightness lost during the long simmer.
| Part | Conventional | Lighter | Why |
|---|---|---|---|
| Core method | More added fat or a heavier proportion | Build thickness by mashing one ladle of cooked lentils, keep oil to twelve grams, and use greens rather than sausage to finish the pot | Browned vegetables and toasted tomato paste provide dark notes, cumin warms the lentils and lemon added at the end restores brightness lost during the long simmer. |
How the flavor stays
Browned vegetables and toasted tomato paste provide dark notes, cumin warms the lentils and lemon added at the end restores brightness lost during the long simmer.
A cost rule that survives inflation
Dry lentils, canned tomatoes and long-keeping root vegetables make six lunches at a stable pantry cost. The recipe needs no meat substitute or prepared broth concentrate.
Ingredients for 6
Measure first; timing is part of how this recipe uses less fat.
- 360 gdry brown lentils
- 400 gcanned diced tomatoes
- 300 gcarrots
- 220 gcelery
- 220 gonion
- 1.5 Llow-sodium stock
- 180 gkale
- 12 golive oil
- 30 gtomato paste
- 25 mllemon juice
Method
Each step includes heat, a visible cue, and a recovery.
Step 1 · follow the visible cue
Rinse lentils and remove the broken dust
Sort lentils on a tray, rinse until the water runs clear and leave them draining while carrots, celery and onion are cut into even small dice.
Look for: The colander water should be clear and no stones or shrivelled dark pieces should remain.
Step 2 · follow the visible cue
Let root vegetables colour before tomatoes arrive
Cook onion, carrot and celery in measured oil until a few edges turn gold. Add tomato paste and cumin and stir until the paste darkens.
Look for: The pot should smell sweet and earthy, with a rust-coloured film but no scorched black spice.
Step 3 · follow the visible cue
Simmer until tender while grains remain separate
Add lentils, tomatoes and stock and simmer partly covered for thirty minutes. Stir near the bottom only occasionally so the lentils do not break early.
Look for: Most lentils should flatten when pressed but still be recognizable throughout the broth.
Step 4 · follow the visible cue
Mash one ladle, then wilt the greens
Mash one full ladle of solids and return it to the pot. Add kale for four minutes, switch off the heat and stir in lemon only after tasting.
Look for: The soup should mound slightly on a spoon while green ribbons remain bright and distinct.
Calories at the same serving size
155 kcal · 31% lower estimated
The estimate uses the listed ingredients divided into 6 servings. Brand labels, trimming, and the amount left in the pan can change the result.
Keep the leftovers in the same spirit
Refrigerate four days or freeze three months. Lentils absorb broth overnight, so add water during reheating before adjusting salt.
Refrigerate four days or freeze three months. Lentils absorb broth overnight, so add water during reheating before adjusting salt.
Frequently asked questions
Can I use red lentils?
Red lentils dissolve quickly and create a different smooth soup. For this intact-plus-mashed texture, brown or green lentils work better.
Is bread included in 345 calories?
No. The value covers one-sixth of the pot; bread, crackers and cheese are separate additions.
- dry brown lentils360 g
- canned diced tomatoes400 g
- carrots300 g
- celery220 g
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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
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