Mashed Potatoes Au Gratin

4 ingredients
6 steps

Ingredients

  • 4 cups leftover mashed potatoes
  • Kosher salt and freshly ground black pepper
  • 1 cup grated Parmesan
  • Leftover gravy

Directions

  1. 1
    Preheat oven to 375 degrees F.
  2. 2
    Spread the mashed potatoes into a buttered 1 quart gratin dish.
  3. 3
    If a flat effect is desired, cover the potatoes with plastic wrap and press evenly flat with your hands.
  4. 4
    Then remove plastic wrap, season with salt and pepper, to taste, and sprinkle with Parmesan.
  5. 5
    Bake until top is golden and crispy, about 20 to 30 minutes.
  6. 6
    Serve with reheated leftover gravy

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