1/2 lb. ground beef
1 c. chopped onion
2 tsp. fat
2 tsp. salt, dash pepper
1/2 c. catsup
1 tbsp. vinegar
1 tbsp. mustard
2 (16 oz.) cans beans (in tomato sauce)

Brown steak and onion in grease. Add remaining ingredients. Pour into baking dish. Bake at 400 degrees for 30 minutes.