1 lb. ground beef
2 tbsp. prepared mustard
2 tsp. vinegar
1 (1 lb.) can red kidney beans, drained
2 (1 lb.) cans pork and beans
1 c. catsup
1/2 c. water
1 pkg. onion soup mix

Mix all ingredients, pour into large greased casserole, bake at 375 degrees for 1 hour.