Lentil Soup Recipe
Introduction
This hearty lentil soup is a comforting and nutritious meal perfect for any day. Packed with vegetables, flavorful spices, and tender lentils, it’s both satisfying and easy to make. A touch of lemon and kale brightens up this classic dish.

Ingredients
- ¼ cup extra virgin olive oil
- 1 medium yellow onion, small diced
- 2 medium carrots, small diced
- 2 celery ribs, small diced
- 2 tablespoons tomato paste
- 3 to 4 cloves garlic, minced
- 2 teaspoons cumin
- 1 teaspoon dried oregano
- 1 teaspoon dried basil
- 1 teaspoon dried thyme
- Kosher salt and freshly ground black pepper, to taste
- 1 (28-ounce) can fire-roasted diced tomatoes
- 6 cups low-sodium vegetable broth
- 1 cup green or brown lentils
- 3 leaves kale, stemmed and sliced
- 1 lemon, juiced (about 3 tablespoons)
Instructions
- Step 1: Heat the olive oil in a large pot over medium heat. Add the diced onion, celery, and carrots, stirring for 4 to 5 minutes until the onion becomes translucent.
- Step 2: Add the tomato paste, minced garlic, cumin, oregano, basil, thyme, salt, and pepper. Stir to combine and toast the spices for 1 to 2 minutes to release their aroma.
- Step 3: Stir in the fire-roasted diced tomatoes, vegetable broth, and lentils. Bring the mixture to a boil, then reduce the heat to low. Partially cover the pot with a lid and simmer for 25 to 30 minutes, until the lentils are tender.
- Step 4: Choose your texture: keep the soup chunky as is, or use an immersion blender to blend a few spots for a creamier consistency.
- Step 5: Stir in the sliced kale and lemon juice. Simmer for an additional 1 to 2 minutes until the kale softens. Taste and adjust seasoning with more lemon juice, salt, or pepper as desired before serving.
Tips & Variations
- For added protein, stir in cooked sausage or diced chicken before simmering.
- Swap kale for spinach or Swiss chard if preferred.
- If you like a spicier soup, add a pinch of crushed red pepper flakes with the spices.
- Using fire-roasted tomatoes gives extra depth, but regular diced tomatoes work well too.
Storage
Store leftover soup in an airtight container in the refrigerator for up to 4 days. Reheat gently on the stove or in the microwave, adding a splash of broth or water if it has thickened. This soup also freezes well for up to 3 months; thaw overnight in the fridge before reheating.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I use red lentils instead of green or brown?
Yes, red lentils cook faster and tend to break down more, resulting in a smoother texture. Adjust simmering time to about 15–20 minutes to avoid overcooking.
Is this soup suitable for a vegan diet?
Absolutely. This recipe uses vegetable broth and plant-based ingredients only. Just ensure your broth is vegan-friendly.
PrintLentil Soup Recipe
A hearty and flavorful lentil soup packed with wholesome vegetables and aromatic spices, finished with fresh kale and a bright squeeze of lemon juice. Perfect for a comforting meal that’s both nutritious and easy to prepare on the stovetop.
- Prep Time: 15 minutes
- Cook Time: 40 minutes
- Total Time: 55 minutes
- Yield: 6 servings 1x
- Category: Soup
- Method: Stovetop
- Cuisine: Mediterranean
- Diet: Vegetarian
Ingredients
Vegetables
- 1 medium yellow onion, small diced
- 2 medium carrots, small diced
- 2 celery ribs, small diced
- 3 cloves garlic, minced
- 3 leaves kale, stemmed and sliced
- 1 lemon, juiced (about 3 tablespoons juice)
Pantry Items & Spices
- ¼ cup extra virgin olive oil
- 2 tablespoons tomato paste
- 2 teaspoons cumin
- 1 teaspoon dried oregano
- 1 teaspoon dried basil
- 1 teaspoon dried thyme
- Kosher salt, to taste
- Freshly ground black pepper, to taste
Liquids & Canned Goods
- 1 (28-ounce) can fire-roasted diced tomatoes
- 6 cups low-sodium vegetable broth
Legumes
- 1 cup green or brown lentils
Instructions
- Heat the oil: Warm the extra virgin olive oil in a large pot over medium heat to prepare for sautéing the vegetables.
- Sauté the vegetables: Add the diced onion, celery, and carrots to the pot. Stir frequently for 4 to 5 minutes until the onion becomes translucent, developing a sweet base for the soup.
- Infuse with flavor: Add the tomato paste, minced garlic, cumin, oregano, basil, thyme, salt, and pepper. Stir well to combine and toast the spices for 1 to 2 minutes to release their aroma.
- Add broth and lentils: Pour in the fire-roasted diced tomatoes, low-sodium vegetable broth, and lentils. Stir everything together to combine the ingredients evenly.
- Simmer: Bring the mixture to a boil, then reduce the heat to low. Partially cover the pot with a lid and let it simmer gently for 25 to 30 minutes, until the lentils are tender.
- Blend (optional): For a creamier texture, use an immersion blender to blend portions of the soup briefly, or leave it chunky according to preference.
- Finish with kale and lemon: Stir in the stemmed and sliced kale along with the freshly squeezed lemon juice. Simmer for an additional 1 to 2 minutes until the kale softens.
- Adjust seasoning: Taste the soup and add any additional lemon juice, salt, or pepper as needed before serving.
Notes
- You can substitute green or brown lentils depending on your preference, but avoid red lentils as they tend to break down more.
- For extra protein, add cooked chicken or sausage if desired, but this soup is nutritious and filling on its own.
- Immersion blending is optional; if you prefer a chunkier texture, simply skip blending.
- Leftovers store well in the fridge for up to 4 days and taste even better the next day.
- To make this soup vegan and vegetarian, ensure that the vegetable broth is free from animal products.
- Adjust the thickness by adding more broth or water if necessary during simmering.
Keywords: lentil soup, vegetable soup, Mediterranean soup, vegetarian soup, healthy soup, lentils, kale soup