Cover pan with aluminum foil. Bake for 35 minutes. Uncover; bake for 20-25 minutes longer or until potatoes are golden and crispy around edges. Run a knife around edges to loosen potato stacks.

For creamy potato stacks, pour a mix of cream and melted butter over the slices before baking. After they're done baking, you can fancy up your stacks with crispy bacon bits, caramelized onions ...