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Easy Sweet Potato and Red Lentil Soup Recipe

4.6 from 131 reviews

This Easy Sweet Potato and Red Lentil Soup is a hearty, nutritious, and comforting dish packed with vibrant flavors from smoked paprika, cumin, and fresh kale. Perfect for a wholesome lunch or dinner, this vegan and gluten-free soup combines tender sweet potatoes, protein-rich red lentils, and a savory vegetable broth base, delivering both warmth and nourishment in every spoonful.

Ingredients

Scale

Vegetables and Aromatics

  • 2 cups small diced yellow onions
  • 1 cup diced carrots (optional)
  • 1 cup diced celery
  • 3 Tbsp chopped or thinly sliced garlic
  • About pounds sweet potatoes or yams, peeled and small diced
  • 8 ounces kale (Tuscan/lacinato/black kale preferred)

Spices and Seasonings

  • 2 tsp smoked paprika
  • ½ tsp crushed red pepper (optional)
  • 2 tsp ground cumin
  • 1 tsp ground coriander
  • 1½ tsp salt, or to taste

Canned and Liquids

  • ¼ cup olive oil
  • 1 (6-ounce) can tomato paste (about ⅔ cup)
  • 8 cups vegetable broth, preferably no- or low-sodium

Legumes

  • 8 ounces red lentils

Instructions

  1. Prep Ingredients: Gather and prep all ingredients according to the specifications. Carefully inspect the red lentils on a sheet pan to remove any stones or debris and then rinse thoroughly under cold running water using a colander.
  2. Sauté Vegetables and Spices: Heat olive oil in a large pot or Dutch oven over medium-low heat. Add the onions, carrots, celery, garlic, smoked paprika, and crushed red pepper flakes. Stir and cook for about 4 minutes until the vegetables have softened slightly, stirring occasionally to prevent sticking.
  3. Add Tomato Paste: Push the cooked vegetable mixture to one side of the pot. Add the tomato paste and cook it for approximately 1 minute to deepen its flavor, then stir it into the vegetables evenly.
  4. Deglaze: Pour in 2 cups of vegetable broth and stir, scraping the bottom of the pot to loosen any flavorful browned bits.
  5. Combine Main Ingredients: Add the remaining vegetable broth, diced sweet potatoes, rinsed red lentils, ground cumin, and ground coriander. Stir all ingredients until well combined. Cover the pot and bring the mixture to a simmer over medium heat, stirring occasionally to prevent the lentils from sticking to the bottom of the pot.
  6. Simmer Soup: Allow the soup to simmer partially covered for 10 minutes, letting the flavors meld and the ingredients soften.
  7. Add Kale and Finish Cooking: Stir in the kale and continue cooking for about 5 more minutes, until the kale, lentils, and sweet potatoes are tender.
  8. Season and Serve: Season the soup to taste with salt. Turn off the heat, ladle the hot soup into bowls, and enjoy your nourishing meal. Buon Appetito!

Notes

  • Red lentils can be substituted with yellow lentils if desired; avoid brown or green lentils as they require longer cooking times and will change the soup’s texture.
  • For added richness, a splash of coconut milk can be stirred in after simmering.
  • Adjust the crushed red pepper flakes to control the heat level according to your preference.
  • This soup stores well in the refrigerator for up to 4 days and freezes beautifully for up to 3 months.
  • Use low-sodium vegetable broth to better control the saltiness and keep sodium levels moderate.

Keywords: sweet potato soup, red lentil soup, vegan soup, healthy soup, gluten-free soup, easy soup recipe, autumn soup, plant-based protein soup