2 (1 lb.) can pork & beans
1 pkg. Lipton onion soup mix
1/2 c. catsup
1/2 c. water
1 tbsp. mustard
2 tsp. vinegar
1 lb. hamburger
2 tbsp. butter

Brown hamburger in 2 tablespoons butter. Combine all ingredients in casserole and bake 30 minutes at 400 degrees.