Try this homemade Mashed Potatoes Au Gratin recipe the whole family will love. Made with leftover mashed potatoes, Kosher salt, Parmesan and gravy. Easy…
This Mashed Potatoes Au Gratin relies on simple, everyday ingredients such as leftover mashed potatoes, grated parmesan and leftover gravy. It comes together quickly and makes 4 servings, at about 293 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