Pre-heat the oven to 350° F.
In a large bowl, combine the hash browns, melted butter, salt, pepper, minced garlic and onion, cream of chicken soup, sour cream, and shredded cheese.
Spread the potato mixture in a greased 9x13 baking dish.
In a smaller mixing bowl, mix together the slightly crushed Corn Flakes and melted butter.
Sprinkle the buttery Corn Flakes over the top of the casserole in the casserole dish.
Bake uncovered at 350° F for about 1 hour, 'til the casserole is golden brown.
Serve while warm.