Thaw hash browns. Blend hash browns, sour cream, cream chicken soup and cheese. Spread mixture evenly in a 9 by 13 pan. Season to taste with lawry's season salt, pepper and onion flakes. Bake at 350 degrees for 20 minutes then take out and top with cornflakes. Next melt butter and pour one half stick over the cornflakes and back in oven for another 25 minutes. (This can be prepared the night before)