1/2 lb. bacon, cut into chunks
1/2 onion, diced
1 (16 oz.) can kidney beans
1 (16 oz.) can pork and beans
1 (8 oz.) can butter beans
1/4 tsp. salt
Dash of pepper
1/2 c. catsup
2 tbsp. vinegar
3/4 tsp. dry mustard
1/2 c. brown sugar

Brown bacon and onion. Drain off fat. Combine remaining ingredients including all canned liquids into large casserole. Bake at 350 degrees for 1 hour.