Try this homemade Au Gratin Potato Casserole recipe the whole family will love. Made with browns, sour cream, Cheddar cheese and cream of mushroom soup.…
This Au Gratin Potato Casserole relies on simple, everyday ingredients such as small onion, finely chopped, pepper, crushed cornflakes cereal and melted butter. It comes together quickly and makes 4 servings, at about 492 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