Caribbean Beef, Black Beans and Sweet Potatoes (Beef Optional)

1 pound ground beef (I use chuck)
1 8oz. can tomato sauce
1 Tbsp. chili powder
1 tsp. cumin
1/2 tsp salt
1 15 oz. can black beans, drained
2 medium sweet potatoes, peeled and sliced thin
1/3 cup raisins 
3 plum tomatoes, chopped
1 cup shredded cheddar cheese

1. Spray crock with cooking spray.
2. Spread beans in bottom of crock. Layer potatoes over beans. Sprinkle with raisins, tomatoes, chili and onion. 
3. Brown beef over medium heat, drain. Stir in tomato sauce, chili powder, cumin and salt. Spread over top of vegetables. (Beef is optional)
4. Cook on Low 5-6 hours or until beans and potatoes are tender.
5. Add cheese on top 30 minutes before serving.

Contributor: Nora MacFarlane
Source: (Adapted from) Just  Pinch Recipes