Try this homemade Swiss Onion Casserole recipe the whole family will love. Made with onion, mushrooms, chicken broth and cream of celery soup. Easy step…
This Swiss Onion Casserole relies on simple, everyday ingredients such as onion, chopped coarsely, sliced mushrooms, chicken broth and cream of celery soup. It comes together quickly and makes 4 servings, at about 359 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