Roll out the puff pastry ⅛ in/0.3 cm thick. Cut a 10-in/25-cm circle from the dough and place it on a parchment-lined sheet pan.
Toss the peaches with the nutmeg and granulated sugar.
Brush the outside 1-in/3-cm perimeter of the puff pastry circle lightly with egg wash. Sprinkle the cake crumbs on top of the pastry, leaving a 2-in/5-cm border. Mound t