1 - 32 oz. pkg. hash browns
1/2 c. melted butter (1 stick)
1 can cream of chicken soup
12 oz. grated cheese
1 small onion, chopped
2 c. crushed cornflakes
8 oz. sour cream

Place thawed potatoes in 9 x 12 pan. Mix together melted butter, soup, cheese, onion and sour cream, pour over potatoes. Top with crushed cornflakes. Pour another stick of butter (melted) over the top and bake uncovered at 350°F for 45-50 minutes. Freezes well before baking.