Add Spices and Tomato Paste: Stir in the tomato paste, cumin, coriander, and dried thyme. Cook for 1-2 minutes, stirring constantly, to toast the spices and deepen the flavor of the tomato paste.
Simmer the Soup: Add the rinsed lentils, vegetable broth, crushed tomatoes, and bay leaf to the pot. Stir to combine all the ingredients. Bring the soup to a boil, then reduce the heat to low.
Cook until Tender: Cover the pot and let the vegan lentil soup simmer for 30-40 minutes, or until the lentils are tender. Stir occasionally to prevent sticking. Remove the bay leaf before serving.
Season and Serve: Season the soup with salt and black pepper to taste. Ladle the hot soup into bowls. Garnish with fresh parsley or cilantro and a squeeze of fresh lemon juice.
Notes
This soup is freezer-friendly and great for meal prep.