Lentil Soup with Butternut and Kale is a comforting, nutrient-dense bowl made with butternut squash, green lentils, hearty kale, and aromatic leeks. This easy, one-pot soup is naturally vegan, gluten-free, and dairy-free, making it a great choice for weeknight dinners, meal prep, or a simple lunch that reheats beautifully.
Butternut Squash Lentil Soup
This vegetarian butternut squash lentil soup combines sweet roasted-squash flavor with the earthiness of green lentils and the slight bite of kale. Cooked leeks add depth and a subtle sweetness that rounds out the broth. The recipe is simple to follow, freezes well, and yields several servings—perfect for families or anyone planning meals ahead.
Why this recipe works
The balance of ingredients makes this soup satisfying and wholesome. Green lentils hold their shape during cooking, offering a tender bite without becoming mushy. Butternut squash adds natural sweetness and creaminess when it breaks down slightly, while leafy kale provides color, texture, and nutrients. A modest amount of tomato paste and vegetable broth builds savory flavor without overwhelming the natural tastes of the vegetables.
This soup is:
- Vegan and dairy-free
- Gluten-free
- Easy to make in one pot
- Freezable and ideal for meal prep
Common questions
Do lentils need to be soaked?
No. Lentils cook quickly and do not require soaking ahead of time like many dried beans, which saves time in the kitchen.
Should you peel butternut squash before cooking?
Yes. The skin of butternut squash can be tough, so it’s best to peel and dice it before adding to the soup. If you prefer to save prep time, many supermarkets sell peeled and pre-cut butternut squash.
How to freeze and reheat
This lentil and butternut soup is ideal for freezing. Let the soup cool completely, then transfer it to freezer-safe containers or flat zip-top bags to store for up to three months. To reheat, thaw overnight in the refrigerator and warm gently on the stove or in the microwave. If reheating from frozen, microwave in short intervals, stirring between each, or simmer gently on the stovetop until heated through.
Butternut Squash Lentil Soup Variations
- Substitute sweet potato for butternut squash for a slightly different sweetness and texture.
- If you can’t find Lacinato (Tuscan) kale, use curly kale, spinach, or Swiss chard—add more tender greens at the end of cooking so they don’t overcook.
- For a spicier version, add a pinch of red pepper flakes or a dash of smoked paprika when you add the tomato paste.
Recipe
Ingredients
- 1/2 tablespoon olive oil
- 1 large onion, diced
- 1 medium carrot, diced
- 2 leeks (white part only), cleaned and chopped
- 1 celery stalk, diced
- 2 tablespoons tomato paste
- 6 cups vegetable broth
- 1 pound peeled and diced butternut squash (about 1/2-inch dice)
- 2 ounces green lentils (about 1/3 cup)
- 1 bay leaf
- 1/2 teaspoon kosher salt, or to taste
- Black pepper, to taste
- 3 cups packed chopped Lacinato (Tuscan) kale, stems removed
Instructions
- Heat a heavy pot or Dutch oven over medium heat. Add the olive oil and warm for a minute.
- Add the diced onion, carrot, leeks, and celery. Reduce the heat slightly and cook for about 4–5 minutes, stirring occasionally, until the vegetables soften and become fragrant.
- Stir in the tomato paste and cook for about 2 minutes to deepen the flavor.
- Add the vegetable broth, bay leaf, and green lentils. Increase the heat and bring the mixture to a boil.
- Reduce the heat to low, cover the pot, and simmer for about 20 minutes—until the lentils are partially cooked.
- Add the diced butternut squash and continue simmering, covered, for about 15 more minutes, or until the squash is tender. Discard the bay leaf and season with kosher salt and black pepper to taste.
- Stir in the chopped kale and simmer uncovered for another 7 minutes, until the kale is tender but still bright.
- Adjust seasoning if needed. Serve hot with crusty bread or a simple side salad.
Notes
To freeze: allow the soup to cool completely, then transfer to freezer-safe containers. Freeze for up to three months. Thaw overnight in the refrigerator and reheat on the stove or in the microwave. This soup also makes a great packed lunch—store leftovers in single-serving containers for easy reheating.
Nutrition (approximate per serving)
- Serving size: 1/3 cup (yield: 6 servings)
- Calories: 122 kcal
- Carbohydrates: 25 g
- Protein: 4 g
- Fat: 1.5 g
- Fiber: 7 g
- Sugar: 8 g
- Sodium: ~310 mg
Serving suggestions
This soup is delicious on its own or paired with a slice of whole-grain bread, a warm roll, or a crisp green salad. A drizzle of olive oil or a squeeze of lemon adds brightness at the table. For added protein, top a bowl with a spoonful of plain yogurt (or dairy-free yogurt) or a sprinkle of toasted seeds.
Enjoy
Whether you’re cooking for one or planning meals for the week, this butternut squash lentil soup is a versatile, flavorful, and nutritious option that’s easy to make and easy to love.
