Baked Beans With Ground Beef
["1 lb. ground beef", "1 c. onions, chopped", "1 tsp. salt", "1 c. ketchup", "2 Tbsp. mustard", "1 Tbsp. vinegar", "1 c. brown sugar", "3 (1 lb. cans) pork and beans (drain 1 can)"]
["Brown beef and onions in skillet; drain well.", "Add remaining ingredients and mix well.", "Bake in uncovered pan or dish at 400\u00b0 for 30 minutes."]
["ground beef", "onions", "salt", "ketchup", "mustard", "vinegar", "brown sugar", "pork"]