Try this homemade Buffet Onion Casserole recipe the whole family will love. Made with onions, grated cheese, potato chips and cream of mushroom soup. Ea…
This Buffet Onion Casserole relies on simple, everyday ingredients such as medium onions, sliced, grated cheese, bag potato chips and cream of mushroom soup. It comes together quickly and makes 4 servings, at about 695 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