Try this homemade Onions Au Gratin recipe the whole family will love. Made with onions, grated cheese, cream of mushroom soup and Worcestershire sauce. …
This Onions Au Gratin relies on simple, everyday ingredients such as small onions, peeled, sharp grated cheese, cream of mushroom soup and worcestershire sauce. It comes together quickly and makes 4 servings, at about 357 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