Easy Casserole (Leftover Roast Beef)
["leftover roast beef", "peeled potatoes", "onion, sliced", "1 pkg. brown gravy mix", "grated cheese"]
["Mix gravy as directed on package.", "Pour into Pyrex dish.", "Slice roast and put into gravy mix.", "Layer alternately with onion and potatoes.", "Cover with grated cheese.", "Cover with foil and bake in 300\u00b0 oven for 1 hour."]
["leftover roast beef", "potatoes", "onion", "brown gravy mix", "grated cheese"]