In a large pot, heat the olive oil over medium heat. Add the chopped onion and bell pepper. Sauté for 5-7 minutes, until softened.
Stir in the minced garlic and cook for another 1-2 minutes until fragrant.
Add the diced sweet potatoes to the pot and stir to combine with the vegetables. Cooking for about 5 minutes will help soften them slightly.
Sprinkle in the ground cumin, smoked paprika, chili powder, cayenne pepper, salt, and pepper. Stir until the sweet potatoes are well coated with the spices.
Pour in the diced tomatoes with their juices and the vegetable broth. Stir in the black beans.
Bring the mixture to a boil, then reduce the heat to low. Cover and let simmer for 25-30 minutes, or until the sweet potatoes are tender. Stir occasionally to prevent sticking.
Taste and adjust seasoning if needed. If you prefer a thinner chili, add an extra splash of vegetable broth.
Serve hot, garnished with fresh cilantro and lime wedges on the side for squeezing.
Notes
Adjust the cayenne pepper to your spice preference.
Keyword black bean, chili, sweet potato, vegetarian