1/8 c. salad oil
1 c. chopped onion
1/2 lb. ground beef
1/2 tsp. salt
1/2 c. catsup
1 tbsp. prepared mustard
1 tsp. vinegar
1 lb. can pork and beans
1 lb. can kidney beans (drained)

Heat oil, add onions, simmer until golden brown. Add ground beef and stir with fork until beef browns. Add remaining ingredients. Pour into baking dish and bake in 400 degree oven for 30 minutes.