Try this homemade Cheesy Onion Casserole recipe the whole family will love. Made with onion rings, butter, flour and milk. Easy step-by-step instruction…
This Cheesy Onion Casserole relies on simple, everyday ingredients such as onion rings, sliced thin, butter, flour and milk. It comes together quickly and makes 4 servings, at about 864 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.
It's versatile enough for an easy weeknight dinner yet satisfying enough for guests at the weekend. Serve it with your favorite sides, and keep any leftovers for a quick meal the next day.
Updated Jun 30, 2026