Cheesy Potato Casserole
["32 oz. pkg. frozen hash browns", "1 small onion, chopped", "1 pt. mayonnaise", "1 lb. Velveeta cheese"]
["Melt cheese and mayonnaise; mix in hash browns with onion. Place in greased 9 x 13-inch pan.", "Bake at 350\u00b0 for 1 hour, uncovered."]
["frozen hash browns", "onion", "mayonnaise", "Velveeta cheese"]