Cheeseburger Casserole
["1 lb. ground beef", "1/4 c. chopped onion", "3/4 tsp. salt", "1/4 c. ketchup", "8 oz. can tomato sauce", "1 can biscuits", "cheese slices (enough to cover casserole)"]
["Brown ground beef and onion.", "Drain, then add ketchup, salt and tomato sauce.", "Heat until boiling."]
["ground beef", "onion", "salt", "ketchup", "tomato sauce", "biscuits", "cheese"]