Red Lentil Soup
Red lentil soup simmered with cumin and paprika until thick, with a lemon finish and a yogurt swirl.
Updated: Nov 9, 2026
Why you'll like it
- Ready in about 40 min.
- Serves 6 — easy to halve or double.
- Easy level — everyday equipment only.
- Stays juicy when cooked to 165°F (74°C).
- Storage, freezing and reheating covered below.
This Red Lentil Soup recipe takes 40 minutes and serves 6 as a starter or a light main. Red lentils need no soaking and break down in the pot, so the soup thickens on its own with no flour or cream.
Helpful guides
Instructions
Heat the oil in a large pot over medium heat, add the onion and carrots, and cook 7 minutes until the onion is soft. The carrots sweeten the base and hold their shape after the lentils collapse.
Stir in the garlic, cumin, and paprika and cook 1 minute until fragrant. Blooming spices in oil carries their flavor through the whole pot instead of leaving it raw.
Add the rinsed lentils and broth, bring to a boil, then lower to a simmer and skim the foam that rises. Skimming keeps the finished soup tasting clean.
Simmer 20 to 25 minutes, stirring now and then, until the lentils have broken down and the soup coats a spoon. Red lentils fall apart faster than brown or green ones, so stay close near the end.
Blend about half the soup with an immersion blender, or mash it with a potato masher, leaving some texture. Partial blending keeps the bowl hearty rather than smooth like puree.
Stir in the salt and a squeeze of lemon, taste, and add more of either as needed. Serve with a swirl of yogurt and a pinch of paprika.
Troubleshooting — fixes, not repeats
- If the soup thickens too much, loosen it with warm broth; lentils keep absorbing liquid as it stands.
- If it tastes dull, add lemon juice at the end, since acid lifts earthy legumes more than extra salt does.
- If the lentils stay firm, they were likely old stock; cook 10 minutes longer and check the pot often.
- If you want it richer, stir 1 tablespoon of olive oil or butter in off the heat before serving.
Make it your way
- Old Dhaka style: For a browned-garlic finish, sizzle 3 sliced cloves in olive oil until golden and spoon them over each bowl with chopped cilantro.
- For a tomato version, add 1 cup of crushed tomatoes with the broth and simmer 5 minutes longer.
- For a coconut version, replace 1 cup of the broth with coconut milk and skip the yogurt.
- A pressure cooker cuts the simmer to 8 minutes at high pressure with a natural release.
Storage & reheating
Cool leftovers within 2 hours, then refrigerate in a covered container and use within 3 to 4 days. Reheat only the portion you will eat until steaming hot throughout — poultry and reheated rice should reach 165°F (74°C).
Refrigerate up to 4 days; the soup sets thick when cold, so thin it with broth or water as you reheat.
Freeze up to 3 months in portions with 1 inch of headspace, thaw overnight in the fridge, and reheat gently with a splash of liquid, stirring because the lentils settle.
FAQ
Do red lentils need soaking?
No. They are split and cook from dry in 20 to 25 minutes. Rinse them until the water runs clear to remove surface starch that clouds the soup.
Why did my lentils turn to mush?
Red lentils break down by design, so the texture is normal. Stop at 20 minutes and stir gently if you want visible pieces, or blend fully for a smooth soup.
Can I use brown or green lentils?
Yes, but they hold their shape and need 35 to 40 minutes. Add 1 cup more broth and expect a chunkier soup.