Place thawed hash browns in very large bowl. Add creamed soups and sour cream; stir to combine and set aside. In saute pan melt 1/4 cup of butter and saute onion and garlic till tender. Add to potato mixture along with seasonings and cheese. Stir together till nicely combined. Spread evenly into a 9 by 13 inch greased glass baking dish. In a small bowl combine Corn Flakes with the melted butter. Evenly place topping over potatoes then sprinkle over topping with dried parsley. Cover with foil and bake in a 350 degree oven for 1 hour and 15 minutes, then remove foil and bake 30 more minutes, or till golden and bubbly. Let stand 15 minutes before serving.