Ingredients
Method
- Heat the olive oil in a large Dutch oven over medium heat. Add the diced onion, carrots, and celery. Sauté for 8-10 minutes until the vegetables soften.
- Add garlic, thyme, rosemary, and red pepper flakes. Cook for another 1-2 minutes.
- Stir in the tomato paste and diced tomatoes. Cook for 3-4 minutes to caramelize the tomato paste.
- Add the brown lentils and vegetable broth. Stir to combine all ingredients.
- Add the bay leaf, bring to a boil, then reduce heat to low, cover, and simmer for 45-60 minutes until the lentils are tender, stirring occasionally.
- Optional: Blend a portion for a smoother texture with an immersion blender and return it to the pot.
- Remove the bay leaf. Stir in the red wine vinegar or lemon juice, adjusting seasoning with salt and pepper.
- Ladle the soup into bowls and garnish with fresh parsley or cilantro.
Notes
This soup stores well in the refrigerator for up to 4-5 days and can be frozen for up to 3 months. Reheat gently and adjust thickness with broth as needed.
