Red Lentil Soup with Potato, Carrot and Celery

A vegetable-broth soup with red lentils, potatoes, carrots, celery and thyme.

Total 50 minMakes About 6–8 servings
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The source’s red-lentil soup uses a full eight cups of broth with two potatoes, so it makes a lighter spoonable soup rather than a thick lentil purée. Rinse the lentils, cut the potatoes and carrots into small pieces, and soften the onion and garlic before adding the vegetables. Celery, thyme and dried parsley give the broth a familiar savory base. Red lentils break down quickly, usually in the same time it takes potatoes to become tender. Taste near the end and adjust seasoning without adding unsupported meat or cream. Serve the soup hot, with fresh parsley if available. This recipe is useful for a simple plant-based lunch.

Recipe card

Red Lentil Soup with Potato, Carrot and Celery

Prep 20 minCook 30 minTotal 50 minYield About 6–8 servings

Equipment: Large soup pot, colander, ladle

Ingredients

Instructions

  1. Rinse and cut

    Rinse lentils; dice onion, carrots, potatoes and celery.

  2. Soften

    Cook onion and garlic in oil, then add carrots, potatoes and celery for 5 minutes.

  3. Add lentils

    Stir rinsed lentils through vegetables.

  4. Simmer

    Add broth, thyme and parsley; simmer 20–25 minutes until potatoes and lentils are tender.

  5. Finish

    Season to taste and serve hot.

How to tell when it is ready

Potatoes are fork-tender and red lentils are soft.

Tips

  • Rinse lentils until water runs mostly clear.
  • Cut potatoes small to match lentil cooking time.
  • Add salt after tasting the broth.
  • Thin leftovers with water if lentils absorb the broth.

Serving suggestions

  • Top with fresh parsley.
  • Serve with rye bread.
  • Finish with lemon juice if desired.
  • Pair with a crisp salad.

Make ahead

Prepare ingredients ahead and keep perishable items cold until cooking or serving.

Storage

Refrigerate cooled soup up to 3 days; thin when reheating if needed.

Food safety

Cool the large soup batch in shallow containers before refrigerating.

Frequently asked questions

Can I use green lentils?

They cook differently and need a longer simmer; this measured version uses red lentils.

How should I store red lentil soup with potatoes and celery?

Refrigerate cooled soup up to 3 days; thin when reheating if needed.

About the author

Hez Arslan

Hez Arslan owns feastdelights.com and also writes practical recipes for everyday home cooking, from familiar Ukrainian dishes to meals inspired by kitchens around the world. His clear, step-by-step guidance helps home cooks approach each recipe with confidence.

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