Slow Cooker Vegetarian Lentil Soup
Hearty, spiced lentil soup with zero meat and tons of flavor.
Method · 7 steps
- 1
In a 6-quart slow cooker, combine lentils, onion, carrots, celery, garlic, diced tomatoes, tomato paste, vegetable broth, cumin, smoked paprika, coriander, turmeric, cinnamon, red pepper flakes, salt, pepper, and bay leaves. Stir well.
- 2
Cover and cook on LOW for 7 hours or HIGH for 4 hours. Lentils are done when tender but not mushy — they should hold their shape but crush easily when pressed.
- 3
Discard bay leaves. Taste and adjust salt.
- 4
For a creamier body, scoop out 2 cups of soup and blend it with an immersion blender or regular blender, then stir back in. This gives body without losing the whole lentils.
- 5
Stir in chopped spinach or kale. The residual heat will wilt it in 2 minutes.
- 6
Stir in lemon juice right before serving — it brightens the whole pot.
- 7
Ladle into bowls. Drizzle generously with olive oil, top with parsley, and serve with crusty bread.
Chef's notes
- →Do not substitute red lentils — they dissolve into mush in a slow cooker. Green or brown only.
- →Lemon juice at the END, not the start. Acid cooked all day turns flat and bitter.
- →Blending a portion of the soup is the vegan cream hack — body without dairy or oil.
Storage
Fridge 5 days — the soup thickens overnight as lentils absorb broth (add splash of water to thin). Freezer 3 months.
