Cracker Barrel's Hashbrowns Casserole

I don't know if this is Cracker Barrel's actual hash browns casserole recipe, but it is close. This recipe can feed a large crowd and is good for a brunch.

Ingredients:

2 lbs frozen hash browns
1/2 cup margarine or 1/2 cup butter, melted
1 (10 1/4 ounce) can cream of chicken soup
1 pint sour cream
1/2 cup onion, peeled and chopped
2 cups cheddar cheese, grated
1 teaspoon salt
1/4 teaspoon pepper

Directions:

Preheat oven to 350°F and spray an 11 x 14 baking dish with cooking spray.
Mix the above ingredients together, place in prepared pan and bake for 45 minutes or until brown on top.