If you're looking to de-healthify your potatoes, here's your solution.
8 medium potatoes (cooked, cooled & grated)¼ cup butter
1 pint sour cream
1 can cream of chicken soup
⅓ cup chopped onions
1 ½ cups shredded cheddar cheese
⅓ cup crushed cornflakes
2 TB melted butter
Heat butter and soup until butter is melted. Add sour cream, onions, and cheese. Mix with potatoes. Spread potatoes in 9x13 baking dish. Mix the 2TB butter with cornflakes and sprinkle on top. Bake at 350° for 45 minutes.