This curried potato and lentil soup is hearty, warmly spiced, and cheap to make. Yukon Gold potatoes and red lentils simmer in broth with curry powder, cumin, turmeric, and fresh ginger. A squeeze of lemon at the end brightens it up.

It tastes like it cooked all day, but it is ready in under an hour. It is also meatless and dairy-free as written, and it keeps well for lunches all week.

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Why This Curried Potato and Lentil Soup Works

• Red lentils thicken it for you. They break down as they cook, so the soup turns thick and creamy without any cream.
• Blooming the spices builds flavor. Cooking the curry powder, cumin, and turmeric in oil for 30 seconds wakes them up before the liquid goes in.
• Yukon Golds hold their shape. They turn soft and buttery but do not fall apart, so you still get chunks of potato in each bite.
• Lemon balances it. A little acid at the end keeps the earthy spices from tasting flat.

Ingredients and Easy Swaps

The base is olive oil or coconut oil, one small yellow onion, 2 cloves of garlic, and a tablespoon of grated fresh ginger. For spice you need 1 tablespoon of curry powder, half a teaspoon of cumin, and a quarter teaspoon of turmeric. The body of the soup is 1.5 pounds of diced yellow potatoes, three quarters of a cup of red lentils, and 4 cups of broth. Salt, pepper, and the juice of half a lemon finish it.

• Broth: Vegetable broth keeps it vegetarian. Chicken broth works if that is what you have.
• Potatoes: Red potatoes work in place of Yukon Gold. Russets also work but break down more and make a thicker soup.
• Lentils: Green or brown lentils work, but they take longer to cook and stay whole, so the soup is chunkier.
• Ginger: If you have no fresh ginger, use half a teaspoon of ground ginger.
• Curry powder: Out of it? Mix turmeric, coriander, and cumin with a pinch of cinnamon and cayenne.

Helpful Kitchen Tools

Microplane grater
It grates fresh ginger and garlic into a fine paste, so the flavor spreads through the whole pot.

Fine mesh strainer
Use it to rinse the red lentils well. Rinsing cuts down on foam and gives the soup a cleaner texture.

Immersion blender
This one is optional. Blend just part of the soup to make it thicker and creamier while keeping some chunks.

How to Make It at a Glance

1. Soften the onion in oil for 5 minutes, then add the garlic and ginger for 1 minute.
2. Stir in the curry powder, cumin, and turmeric and cook for 30 seconds.
3. Add the potatoes, lentils, broth, salt, and pepper. Bring to a boil.
4. Lower the heat and simmer uncovered for 20 to 25 minutes until everything is tender.
5. Blend 1 to 2 cups if you want it creamier, then stir in the lemon juice and season to taste.

The full amounts are in the recipe card below. Each of the 4 servings has about 310 calories, 11 grams of protein, and 8 grams of fiber.

Common Mistakes to Avoid

• Burning the spices. Ground spices scorch fast. Keep the heat at medium and add the broth after about 30 seconds.
• Cutting the potatoes unevenly. Aim for half inch cubes so they all finish at the same time.
• Walking away from the pot. Red lentils can stick to the bottom. Stir every few minutes while it simmers.
• Skipping the lemon. Without it, the soup can taste heavy. Add it at the end, then taste and adjust the salt.

Variations

• Add greens: Stir in chopped spinach or kale during the last few minutes.
• Make it creamy: Add a splash of coconut milk at the end for richness with no dairy.
• Add heat: The soup is warm, not spicy. Add chili flakes or a drizzle of chili oil for a kick.
• Add protein: Stir in a can of drained chickpeas or some shredded cooked chicken.

What to Serve With It

Top each bowl with chopped cilantro, a swirl of coconut milk, or chili oil. Serve it with warm naan or flatbread for dipping, or spoon it over rice for a bigger meal. A simple cucumber salad on the side adds something cool and crisp.

Make Ahead, Storage, and Reheating

Fridge: Store in an airtight container for up to 5 days. The flavor gets even better by day two.

Freezer: Let it cool, then portion and freeze for up to 3 months. Thaw overnight in the fridge. The potatoes may soften a little after freezing.

Reheating: Warm it on the stove or in the microwave. The lentils keep soaking up liquid, so add a splash of broth or water to loosen it.

Curried Potato and Lentil Soup FAQ

Is this soup spicy?
No. Curry powder adds warmth but not much heat. Add chili flakes if you want more.

Do I need to soak red lentils?
No. Just rinse them well. They cook in about 20 minutes.

Can I make it dairy-free and vegan?
It already is when you use vegetable broth. Coconut milk is a good dairy-free way to make it creamier.

Can I make it in a slow cooker?
Yes. Cook the onion, garlic, ginger, and spices on the stove first, then add everything except the lemon to the slow cooker. Cook on low for 6 to 7 hours and stir in the lemon at the end.

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If you try this recipe, I’d love to hear your thoughts in the comments below.