Add the lentils, onion, carrots, celery, vegetable broth, diced tomatoes, garlic, cumin, coriander, turmeric, and smoked paprika to the slow cooker.
Stir the mixture well and season with salt and black pepper.
Cover and cook on low for 7 hours, until the lentils are soft and the vegetables are tender.
Ladle the soup into bowls and sprinkle with fresh cilantro right before serving.
Notes
If the soup thickens in the fridge, add a little extra broth when reheating to loosen it back to your preferred texture. Cilantro brightens the warm spices at the end, so add it only when serving. The flavors stay balanced for up to four days when stored in the refrigerator.Course: Soup
Cuisine: Mediterranean
Equipment: Slow Cooker