Yummy Baked Beans

1 (16 oz.) can white beans
1 (16 oz.) can red (kidney) beans
1/2 c. brown sugar
1/4 tsp. dry mustard
1/4 c. ketchup
1/2 lb. bacon- cooked, drained, and cut up (you could just get the pre- cooked bacon)
1 diced onion
1 bell pepper, chopped
1 Tbsp. butter

Cook onion and bell pepper together in butter. Add all beans (including the liquid in the cans). Cook 20 minutes covered. Add the rest of the ingredients. Cook an additional 20- 30 minutes.
Serves 4-6