Try this homemade Onion Casserole recipe the whole family will love. Made with White Onions, Cream Of Mushroom Soup, Cheddar Cheese and Cayenne Pepper. …
This Onion Casserole relies on simple, everyday ingredients such as cayenne pepper. It comes together quickly and makes 4 servings, at about 434 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
Serves 4
Soups & Stews
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