Try this homemade Ham Au Gratin recipe the whole family will love. Made with ham, mushrooms, onion and mayonnaise. Easy step-by-step instructions included.
This Ham Au Gratin relies on simple, everyday ingredients such as finely cubed cooked ham, finely chopped onion, asparagus (15 oz.), drained and mayonnaise (i use less). It comes together quickly and makes 4 servings, at about 618 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