10 x 15–inch rimmed sheet pan (You can use a standard half-sheet pan, but spread the mixture extra thin toward the center.)
Ingredients
2cupsmashed potatoesabout 1 lb / 450 g potatoes, cooked and fully cooled
2large eggs
1cupPecorino Romanofinely grated
¼cupfresh parsleyfinely chopped
Salt and pepper to taste
¼cupolive oildivide
Instructions
Preheat the Oven
Preheat oven to 425°F (220°C).Place a rack in the middle-to-lower third of the oven for best crisping.
Oil the Pan
Generously coat the sheet pan with 2 tablespoons olive oil. The oil should fully cover the bottom — this helps crisp the scarpaccia like it’s shallow-fried.
Make the Mixture
In a bowl, combine mashed potatoes, eggs, Pecorino Romano, parsley, salt, and pepper. Mix until smooth and spreadable.
Spread Very Thin
Transfer the mixture to the pan and spread it very thin, almost edge to edge. Drizzle the remaining 2 tablespoons olive oil evenly over the top.
BakeBake for 22–28 minutes, rotating the pan halfway through.The scarpaccia is done when:The top is deeply goldenThe edges are crisp and slightly curledThe center is firm, not soft or steamy
Optional: For extra crispiness, broil for 2–3 minutes at the end. Watch closely
Rest & Slice
Let rest 5–10 minutes before slicing. This allows steam to escape and keeps it crisp.Cut into squares or wedges and serve warm or at room temperature.