This is the school cafeteria version, but scaled down batches go over amazingly well at brunch until people find out what goes into it and they start clutching their chest.
(Yes, that is 12 cups melted butter. In fact, it's 12 of most things, so you may as well use 12 lbs of cheese.)
FROZEN HASH BROWN POTATO CASSEROLE
12 (32 oz.) pkg. shredded frozen potatoes
6 c. melted butter
12 cans cream of chicken soup, undiluted
10 lb. grated cheddar cheese
12 (8 oz.) cartons sour cream
4 tbsp. salt
6 sm. onions, chopped
24 c. crushed corn flakes
6 c. melted butter
Place thawed potatoes in 4 shallow cafeteria baking pans. Mix together next 6 ingredients and pour over potatoes equally. Top with crushed cornflakes and drizzle melted butter over all. Bake uncovered at 350 degrees for 45 minutes. Serves 150.