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Caramelized Onion Red Lentil Soup

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  • Author: Amy
  • Prep Time: 15 minutes
  • Cook Time: 30 minutes
  • Total Time: 45 minutes
  • Yield: 4 servings
  • Category: Soup
  • Method: Stovetop
  • Cuisine: Mediterranean
  • Diet: Vegan

Description

A comforting and hearty soup made with deeply caramelized onions, tender red lentils, and warming spices simmered together for a rich and nourishing bowl. This simple one-pot vegan soup delivers creamy texture and balanced flavor with minimal ingredients.


Ingredients

2 tablespoons olive oil

3 large onions, thinly sliced

3 cloves garlic, minced

2 teaspoons ground cumin

1 teaspoon smoked paprika

1.5 cups red lentils, rinsed and drained

6 cups vegetable broth or water

1 can (14.5 ounces) diced tomatoes

2 carrots, diced

1 teaspoon salt (adjust to taste)

1/2 teaspoon black pepper (adjust to taste)

1 tablespoon lemon juice

Fresh parsley or cilantro for garnish (optional)


Instructions

  1. Heat olive oil in a large pot or Dutch oven over medium heat. Add the sliced onions with a small pinch of salt and cook slowly for 15–20 minutes, stirring occasionally, until the onions are soft, golden brown, and caramelized.
  2. Stir in the minced garlic, ground cumin, and smoked paprika. Cook for 1–2 minutes until fragrant and well combined with the onions.
  3. Add the diced carrots and cook for about 5 minutes, allowing them to soften slightly.
  4. Pour in the rinsed red lentils, vegetable broth, and diced tomatoes. Stir everything together and bring the mixture to a gentle boil.
  5. Reduce the heat to low, cover the pot, and simmer for about 20 minutes until the lentils are tender and the soup thickens.
  6. Blend the soup using an immersion blender if a smoother texture is desired, or leave partially chunky for a rustic style.
  7. Stir in the salt, black pepper, and lemon juice. Taste and adjust seasoning if needed.
  8. Serve hot and garnish with fresh parsley or cilantro if desired.

Notes

Blend the entire soup for a creamy texture or leave it partially chunky for a rustic style.

Add a handful of spinach or chopped kale near the end of cooking for extra nutrition.

A pinch of chili flakes or cayenne pepper can add gentle heat.

A small splash of coconut milk can make the soup richer and creamier.

Store leftovers in the refrigerator for up to 3 days or freeze for up to 3 months.


Nutrition

  • Serving Size: 1 bowl
  • Calories: 320 kcal
  • Sugar: 8 g
  • Sodium: 780 mg
  • Fat: 9 g
  • Saturated Fat: 1.2 g
  • Unsaturated Fat: 7 g
  • Trans Fat: 0 g
  • Carbohydrates: 45 g
  • Fiber: 14 g
  • Protein: 16 g
  • Cholesterol: 0 mg