Calico Beef and Bean Bake

1/2 to 1 lb. ground beef
3/4 lb. bacon, cut into pieces
1 cup chopped onion
2 20 oz. cans pork and beans
1 16 oz. can dark red kidney beans, drained
1 16 oz. can butter beans
1 cup ketchup
1/4 cup packed brown sugar
3 tablespoons white vinegar
1 teaspoon salt
Black pepper to taste

Brown ground beef, bacon, and onion in a 12-inch skillet, drain off fat. Pour meat mixture into a baking dish or slow-cooker pot. Stir in remaining ingredients. Cook in baking dish in 325-degree oven for 1 1/2 hours, or in an electric slow cooker set on low for 4 to 6 hours. Makes 8 servings.

NOTE: Recipe from the Lion House Christmas recipe book, which someone gave us as a wedding gift. Very tasty.