Preheat the oven to 325F.
On a lightly floured surface or on parchment paper, roll the dough into a circle 12 inches in diameter. Trim the edges of the circle if necessary. Gentrly transfer dough to cooking sheet.
Arrange the peaches in the middle of the dough as desired. You can make a circle with them or just drop onto the dough. Leave a 2-3inch border.
Note: If you choose to drop the peaches over the batter without arranging them in any shape, squeeze the juice well before adding to the batter.
Carefully fold the edges of the dough over the peaches.
Brush the edges of the dough with egg yolk.
Sprinkle dark brown sugar on top.
Bake until the filling is bubbly and the crust is golden brown. About 35-40 minutes.
Allow to cool before serving and serve with vanilla ice cream or whipped cream.