Try this homemade Mac'n Cheese Casserole recipe the whole family will love. Made with yellow onion, butter, mustard and Wisconsin. Easy step-by-step ins…
This Mac'n Cheese Casserole relies on simple, everyday ingredients such as (45 ml) butter, (10 ml) mustard and (125 ml) milk. It comes together quickly and makes 4 servings, at about 782 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