Best Cheese Potatoes

These are sooooooooo yummy and freeze well too. my mom has been making them for years!!

Spray pan with cooking spray.

Stir all ingredients in baking dish.

Bake uncovered on 350 degrees for approximately 1 hour or until the edges start to bubble.

frozen hash browns, light sour cream, cream of chicken soup, cheese whiz, diced onion, margarine, salt, black pepper