This Simple Slow Cooker Lentil Chili is a comforting, hearty, and nutritious meal that’s perfect for busy days. Packed with protein-rich lentils, vegetables, tomatoes, and warm spices, this chili slowly simmers in the slow cooker to develop deep, rich flavor.
It’s an easy dump-and-go recipe that requires minimal prep and results in a filling meal that’s perfect for lunch, dinner, or meal prep. Plus, it’s naturally vegetarian, budget-friendly, and packed with fiber.

Ingredients
| Ingredient | Quantity | Notes |
|---|---|---|
| Dry brown or green lentils | 1 cup | Rinsed |
| Onion | 1 medium | Diced |
| Garlic | 3 cloves | Minced |
| Bell pepper | 1 medium | Diced |
| Carrot | 1 large | Diced |
| Diced tomatoes | 1 can (14 oz) | With juices |
| Tomato sauce | 1 cup | |
| Vegetable broth | 3 cups | |
| Chili powder | 1½ teaspoons | |
| Ground cumin | 1 teaspoon | |
| Smoked paprika | 1 teaspoon | |
| Salt | 1 teaspoon | Adjust to taste |
| Black pepper | ½ teaspoon | |
| Olive oil | 1 tablespoon | Optional |
| Fresh cilantro | Optional | For garnish |
Instructions
1. Prepare the Ingredients
Rinse the lentils under cold water and chop the onion, bell pepper, carrot, and garlic.
2. Add to Slow Cooker
Place lentils, onion, garlic, bell pepper, carrot, diced tomatoes, tomato sauce, and vegetable broth into the slow cooker.
3. Season the Chili
Add chili powder, cumin, smoked paprika, salt, black pepper, and olive oil. Stir gently to combine.
4. Slow Cook
Cover and cook on Low for 6–7 hours or High for 3–4 hours, until lentils are tender and the chili thickens.
5. Taste and Serve
Taste and adjust seasoning if needed. Serve warm and garnish with fresh cilantro if desired.
Optional Toppings
- Avocado slices
- Shredded cheese
- Sour cream or Greek yogurt
- Fresh cilantro
- Tortilla chips or crushed crackers
Tips for the Best Lentil Chili
- Use brown or green lentils since they hold their shape well.
- Add extra broth if you prefer a thinner chili.
- For extra heat, add diced jalapeño or cayenne pepper.
- This chili tastes even better the next day as flavors deepen.
Storage
- Refrigerator: Store in an airtight container for up to 4–5 days.
- Freezer: Freeze for up to 3 months.
- Reheat on the stovetop or microwave with a splash of broth if needed.

