Add eggs and the remaining of the above ingredients into a one gallon freezer zip lock bag and seal the bag, removing all excess air and freeze. (See tip about the cheese up top)
To serve thaw completely in refrigerator and put into a greased 9 x 13 dish. Bake uncovered in 350 degree oven for 45-50 minutes or until a knife inserted comes clean. Serves 8-12.
Notes
If you don't want to freeze this, just thaw hash browns before putting the casserole together and bake as usual.