Hobo Beans
["1 lb. ground beef", "1 c. ketchup", "2 tsp. vinegar", "2 (1 lb.) cans pork and beans", "1 (1 lb.) can kidney beans, drained", "1/4 c. oil", "2 c. chopped onions", "1 tsp. salt", "2 Tbsp. prepared mustard"]
["Brown onions in oil; add ground beef.", "Stir with fork until brown.", "Add all but beans.", "Stir well and add beans.", "Put in casserole dish; bake at 400\u00b0 in oven approximately 30 minutes."]
["ground beef", "ketchup", "vinegar", "pork", "kidney beans", "oil", "onions", "salt", "mustard"]