Hash Brown Potato Casserole | Easy Cheesy Potatoes

Ingredients

• 2 pounds hash brown potatoes (frozen)
• 1 cup onions (chopped)
• 2 cans cream of chicken soup (undiluted)
• 2 cups sour cream
• 2 cups corn flakes (or other plain cereal, like Special K)
• 1/4 cup butter
• 2 cups grated cheddar cheese