Hash Browns Au Gratin
["2 lb. frozen hash browns", "1 stick butter", "1 pt. half and half", "1/2 lb. Velveeta", "1/4 lb. Cheddar cheese"]
["Pour over hash browns in greased casserole dish.", "Let set 1 hour and bake at 350\u00b0 for 1 hour."]
["frozen hash browns", "butter", "Velveeta", "Cheddar cheese"]