Sweet Potato Chili

4 med - small sweet potatoes diced (or two large,about 2 cups)
1 large onion diced
2 tbsp chopped garlic
1tbsp olive oil
2 tbsp chili powder
1 tbsp cumin
1/2 tsp pepper
1 tsp salt
1 cup beef broth
1 cup water
1 (15 oz) can of tomato sauce
1 small can of chopped green chilies
2 tbsp brown sugar
1 can black beans (rinsed and drained)
1/4 c chopped cilantro
2 tbsp lime juice or the juice of 1 lime
1/4 tsp ground red pepper (opt.)

In a large pot heat oil and add onions, saute until tender. Add garlic and saute until soft, but not brown. add the chili powder, cumin, pepper, salt and sweet potatoes, stir to combine. Add the cups of water and broth. Simmer for 15 minutes. Add the tomato, brown sugar, beans and green chilies and then simmer for another 10-15 minutes. Take off heat, stir in the cilantro and lime juice, serve with tortilla chips and enjoy.