Needless to say this is high calorie. You can cut the calories with the sour cream and use fat free soup. I will not use fat free cheese, but that's a personal thing.
2 pounds frozen hashbrowns
1 cup diced onion
1 can cream of chicken soup
1/2 cup melted butter
8 ounces shredded cheddar cheese
16 ounces sour cream
Thaw potatoes 30 minutes. Heat oven to 350 F. Combine all ingredients in large bowl. Spoon into glass baking dish 9x13 or large casserole. Bake 1 hour.
