Melt 1 stick of butter.
Stir in sour cream, soup and cheese. Add hash browns.
Put in a 9x13-inch pan and spread evenly.
Melt the other stick of butter and add corn flakes. Blend well. Add more corn flakes if needed.
Sprinkle flakes over potato mixture.
Bake uncovered at 350 degrees for 45 minutes, or until flakes are brown and potatoes are bubbling.