Hamburger Pie
["1 medium onion, chopped", "1 lb. ground beef", "3/4 tsp. salt", "dash of pepper", "1 can (2 c.) cut green beans, drained", "1 can condensed tomato soup", "5 medium potatoes, cooked", "1/2 c. warm milk", "1 beaten egg"]
["Cook onion in small amount of butter until tender, not brown. Add meat and first seasonings.", "Brown lightly.", "Add drained beans and soup.", "Pour into greased 1 1/2-quart casserole dish.", "Mash potatoes while hot.", "Add milk, egg, salt and pepper.", "Drop in mounds over the meat.", "If desired, sprinkle potatoes with shredded cheese.", "Bake in moderate oven at 350\u00b0 for 25 to 30 minutes."]
["onion", "ground beef", "salt", "pepper", "green beans", "tomato soup", "potatoes", "warm milk", "egg"]