Hamburger Pie Casserole
["1 medium onion", "1 lb. hamburger", "1 can undiluted tomato soup", "1 can green beans, drained", "4 potatoes, mashed", "salt and pepper to taste"]
["Brown the hamburger and onion in oil.", "Place in a casserole dish.", "Add tomato soup and green beans.", "Spread mashed potatoes on top.", "Place in oven at 350\u00b0 for about 30 minutes or until brown."]
["onion", "hamburger", "tomato soup", "green beans", "potatoes", "salt"]