Hearty Lentil and Kale Soup Recipe

If you want a warm, satisfying meal that’s simple to prepare, this Lentil and Kale Soup is an excellent choice. It’s a wholesome, one-pot soup filled with vegetables, green or brown lentils, crushed tomatoes and fresh kale. Naturally dairy-free, vegan and gluten-free, this recipe is flexible: adjust the seasonings or swap kale for spinach to suit your taste. It also reheats well, making it ideal for leftovers or meal prep.

Easy to make and full of flavor, this lentil soup is a great weeknight dinner for families or anyone craving a comforting bowlful. The combination of earthy lentils, savory tomatoes and bright lemon makes a balanced, nourishing dish with plenty of protein and fiber.

Why You’ll Love This Recipe

• Everything cooks in a single pot, which makes cleanup quick.
• High in protein and fiber thanks to lentils and vegetables.
• Flavorful and adaptable — you can easily tweak spices and greens.
• Family-friendly — both kids and adults enjoy it.
• Improves in flavor the next day, so it’s perfect for leftovers.

Ingredients You Need

• Fresh vegetables: Onion, carrots and celery provide a flavorful base. Add chopped kale or spinach; any variety of kale works—remove the tough stems first.
• Crushed tomatoes: Use plain canned or jarred crushed tomatoes with no added spices.
• Lentils: Green or brown lentils hold their shape best; red lentils break down and become mushy, so they’re not recommended here.
• Vegetable broth: Low-sodium vegetable broth is preferred; you can substitute water plus bouillon cubes if needed.
• Lemon juice: Fresh lemon brightens the finished soup; it’s optional but recommended.
• Extra virgin olive oil: Avocado oil can be used as an alternative.
• Spices: Garlic, ground cumin, dried oregano, salt and freshly ground black pepper. Adjust quantities to taste.

How to Make Lentil and Kale Soup

This recipe comes together easily in one pot. Follow these straightforward steps for a hearty, flavorful soup.

1. Cook the vegetables: Heat olive oil in a large pot or Dutch oven over medium-high heat. Add the chopped onion, carrots and celery and sauté until the onion is translucent, about 3–4 minutes.
2. Add the spices: Stir in minced garlic, ground cumin, dried oregano, salt and pepper. Cook for about 30 seconds until fragrant.
3. Add tomatoes, lentils and broth: Pour in the crushed tomatoes, rinsed lentils, vegetable broth and add a bay leaf. Bring the mixture to a boil, then reduce heat to low, partially cover the pot and simmer.
4. Simmer until lentils are tender: Cook for 25–30 minutes, or until lentils are tender but still hold their shape. Remove and discard the bay leaf.
5. Finish with greens and lemon: Stir in the chopped kale and simmer for an additional 5 minutes, until the greens are wilted. Remove from heat and stir in the lemon juice. Serve warm.

Recipe Tips and Substitutions

• Swap vegetables: Add diced potatoes, sweet potatoes or a can of diced tomatoes for extra texture and heartiness.
• Make it spicy: Add red pepper flakes or diced jalapeño for heat. A touch more cumin enhances warmth and depth.
• Best lentils: Brown or green lentils maintain texture; avoid red lentils for this soup unless you want a thicker, more puree-like consistency.
• Thicken the soup: If you prefer a thicker texture, pulse a portion of the soup with an immersion blender before adding the greens. A few quick pulses will thicken the broth without fully pureeing the beans and vegetables.
• Storage: Refrigerate leftovers in an airtight container for up to 3 days. To freeze, cool completely, transfer to freezer-safe containers or bags, remove excess air and freeze for up to 3 months. Thaw before reheating on the stovetop.

FAQs

Other Vegetable Soup Recipes

• Broccoli Cheddar Soup (Instant Pot)
• Potsticker Soup with coconut broth
• One-Pot Tortellini Minestrone
• Roasted Autumn Squash Soup

Did you try this Lentil and Kale Soup? Leave a rating and review to share your experience.

Lentil and Kale Soup

A hearty bowl of lentil soup made with fresh vegetables, kale and simple seasonings — comforting, nutritious and easy to prepare.

Ingredients

• 1 tablespoon extra virgin olive oil
• 1 medium onion, chopped
• 2 large carrots, chopped
• 2 celery stalks, chopped
• 1 teaspoon minced garlic
• 2 teaspoons ground cumin
• 1 teaspoon dried oregano
• 1/2 teaspoon kosher salt
• 1/4 teaspoon freshly ground black pepper
• 28 ounces crushed tomatoes
• 2 cups uncooked green or brown lentils, rinsed and drained
• 8 cups low-sodium vegetable broth (or 8 cups water + 2 bouillon cubes)
• 1 bay leaf
• 1 small bunch kale or spinach, chopped (about 3 cups)
• 1 tablespoon lemon juice

Instructions

1. Heat the olive oil in a large pot or Dutch oven over medium-high heat. Add the onion, carrots and celery and sauté until the onion becomes translucent, about 3–4 minutes.
2. Add the garlic, cumin, oregano, salt and pepper; stir for about 30 seconds until fragrant.
3. Pour in the crushed tomatoes, lentils, vegetable broth and add the bay leaf. Bring to a boil, then lower the heat to a simmer and partially cover the pot to allow steam to escape.
4. Simmer for 25–30 minutes, until the lentils are tender. Discard the bay leaf.
5. Stir in the chopped kale and simmer 3–5 minutes until wilted. Remove from heat and stir in lemon juice. Serve warm.

Notes

Storage: Refrigerate leftovers for up to 3 days. To freeze, cool completely and store in freezer-safe containers for up to 3 months. Thaw and reheat on the stovetop.

Substitutions: Use brown or green lentils for best texture. Replace vegetable broth with water plus bouillon if needed. Avocado oil can replace olive oil. Fresh lemon juice enhances flavor but is optional.

Nutrition (per serving, approximate)

Calories: 246 kcal; Carbohydrates: 43 g; Protein: 15 g; Fat: 3 g; Fiber: 18 g; Sodium and micronutrient values may vary depending on ingredients used. Use this as an estimate.