Baked Bean Casserole
["1 lb. ground beef", "1 can kidney beans", "1 can pork and beans", "1/2 onion", "1 tsp. mustard", "1 small bottle catsup", "1 tsp. vinegar", "dash of salt"]
["Brown onion and ground beef in skillet.", "Mix pork and beans and add drained kidney beans.", "Stir in ground beef and onion.", "Add remaining ingredients.", "Mix well.", "Bake in a moderate oven at 350\u00b0 for 45 minutes.", "Stir occasionally."]
["ground beef", "kidney beans", "pork", "onion", "mustard", "catsup", "vinegar", "salt"]