1/2 lb. bacon, cut up
1/2 lb. hamburger
1 c. onion, chopped
1 (16 oz.) can pork & beans
1 (16 oz.) can kidney beans
1 (16 oz.) can Grandma Brown beans
3/4 c. brown sugar
1/2 c. ketchup
2 tsp. vinegar
1 tsp. mustard

Fry bacon, hamburger, onion and drain. Mix all ingredients, place in casserole dish and cover. Bake at 350 degrees for 40 to 60 minutes.