Preheat oven to 375 degrees. Let the package of shredded hash browns come to room temp. and then pour hash browns into a 9x13 aluminum pan. In a large bowl mix together the shredded cheese, cream of chicken soup, sour cream, chopped onion and one stick of butter (melted). Once combined, pour this mixture over the top of the hash browns.
Crush 2 cups of corn flakes and combine them with the other stick of butter (melted), then spread this mixture on top of the potatoes as well.
Bake in oven for 1 hour or until the corn flake mixture starts to turn a golden brown and bubbly - Enjoy!