Try this homemade Kay's Potato Au Gratin recipe the whole family will love. Made with potato, onion, condensed milk and cream of mushroom soup. Easy ste…
This Kay's Potato Au Gratin relies on simple, everyday ingredients such as potato, sliced, onion, half rings, condensed milk and cream of mushroom soup. It comes together quickly and makes 4 servings, at about 754 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.
It works as a light main on its own or as a starter alongside crusty bread, and it's just as good for a cozy night in as it is for feeding a crowd. Leftovers keep well, so it's a smart choice for meal prep too.
Updated Jun 30, 2026