Slow-cooker red lentil soup

This slow-cooker red lentil soup combines hearty lentils and vegetables with warm spices for a nutritious, easy meal. The slow cooking method blends flavours beautifully, creating a comforting dish.

17 Nov 2025
Cook time 250 min
Prep time 20 min

Ingredients:

2 tsp olive oil
1 onion
2 carrots
1 stalk celery
2 garlic cloves
1 tbsp ginger root
2 tsp ground cumin
2 tbsp dried coriander
1.50 cups canned lentils
4 cups vegetable broth
Slow-cooker red lentil soup

Slow-cooker red lentil soup is a hearty, nutritious, and convenient recipe perfect for meal prepping or cozy dinners. This soup is rich in vitamins, fiber, and plant-based protein, making it a wholesome choice for any diet. The slow cooker method allows the flavors to meld together beautifully, creating a comforting dish that requires minimal hands-on time.

Instructions:

1. Prepare the Vegetables:
- Dice the onion, carrots, and celery, ensuring they are all roughly the same size to ensure even cooking.
- Mince the garlic cloves and grate the fresh ginger root.
2. Sauté the Aromatics:
- In a skillet over medium heat, add the olive oil.
- Once the oil is hot, add the diced onion, carrots, and celery. Sauté for about 5-6 minutes, or until the vegetables are softened.
- Add the minced garlic and grated ginger to the skillet, and sauté for an additional 1-2 minutes, until fragrant.
3. Assemble the Soup in the Slow Cooker:
- Transfer the sautéed vegetables to your slow cooker.
- Add the ground cumin, dried coriander, canned red lentils, and vegetable broth to the slow cooker.
4. Cook the Soup:
- Set your slow cooker to the low setting and cook for 6-8 hours. Alternatively, you can cook on the high setting for 3-4 hours.
- Throughout the cooking process, the lentils and vegetables will become tender and the flavors will meld together.
5. Finishing Touches:
- Once the soup is cooked, taste and adjust seasoning as necessary. You may want to add salt and pepper to taste.
- If you prefer a smoother consistency, you can use an immersion blender to purée the soup to your desired texture.
6. Serve:
- Ladle the soup into bowls and serve hot.
- Optionally, garnish with fresh cilantro, a dollop of yogurt, or a squeeze of lemon juice for added brightness.

Once cooked, the slow-cooker red lentil soup will greet you with inviting aromas and a rich, savory flavor profile. Ladle into bowls, and enjoy it as is, or with a side of crusty bread for a satisfying meal. This soup keeps well in the refrigerator for a few days and can also be a great option for freezing, making it perfect for busy weeknights or lunches on-the-go.

Slow-cooker red lentil soup FAQ:

What is the cooking time for slow-cooker red lentil soup?

Cook the soup on low for 6-8 hours or on high for 3-4 hours. The lentils and vegetables should be tender when done.

How can I store leftover red lentil soup?

Store leftover soup in an airtight container in the refrigerator for up to 4-5 days. You can also freeze it for up to 3 months. Reheat thoroughly before serving.

Can I use dried lentils instead of canned in this recipe?

Yes, you can use dried lentils; however, you'll need to increase the cooking time and add additional liquid. Soak them for a few hours or cook them separately before adding to the soup.

What are some good substitutes for the spices in this soup?

If you don't have ground cumin or coriander, you can substitute with curry powder for a different flavor, or leave them out entirely and enhance with other herbs like thyme or basil.

How can I adjust the thickness of the soup?

If you prefer a thicker soup, blend a portion of it with an immersion blender. For a thinner consistency, add more vegetable broth until you reach your desired texture.

Tips:

- For extra depth of flavor, sauté the onions, carrots, and celery in olive oil before adding them to the slow cooker.

- Using fresh ginger root instead of ground ginger can enhance the flavor complexity of the soup.

- Feel free to adjust the spices to your taste – add more cumin or coriander if you prefer a stronger flavor.

- If the soup is too thick for your liking, you can add more vegetable broth or water to reach your desired consistency.

- Garnish with fresh herbs like cilantro or parsley for an added burst of freshness.

- Add a squeeze of lemon juice before serving to brighten the flavors.

- For a creamier texture, you can blend a portion of the soup with an immersion blender.

Nutrition per serving

4 Servings
Calories 160kcal
Protein 10g
Carbohydrates 30g
Fiber 9g
Sugar 7g
Fat 3.57g

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