2 lbs. frozen hashbrowns, thawed
1 stick melted butter
1 tsp. salt
1/4 tsp. pepper
1/2 c. chopped onion
1 can cream of mushroom soup
1 (8 oz.) sour cream
10 oz. grated sharp cheese
2 c. crushed corn flakes

Mix all ingredients (except butter and crushed corn flakes) in a greased casserole dish (9x13 size). Mix 2 cups crushed corn flakes with melted butter. Sprinkle over top. Bake at 350 degrees for 45 minutes.