Killer Potato Casserole

1 (32 ounce) package frozen potatoes au gratin

1 (16 ounce) container sour cream

4 cups shredded Cheddar cheese

2 (10.75 ounce) cans condensed cream of chicken soup

4 cups crushed cornflakes cereal

Preheat oven to 375 degrees F (190 degrees C).

In a large bowl combine the potatoes, sour cream, cheese and soup and mix well. Spread mixture into a 9x13 inch baking dish and top with crushed corn flakes.

Bake for 75 minutes, or until cooked through and golden .