Preheat oven to 375 degrees.
Roll out dough to about a 13-inch round, on a lightly floured surface. Transfer to a parchment-lined baking sheet.
Toss apples, granulated sugar, flour, lemon juice, and cinnamon together in a bowl.
Spread apple butter over bottom of dough, leaving about a 1 ½ inch border.
Arrange apples over apple butter. Sprinkle top of apples with additional cinnamon and nutmeg.
Fold in edges of dough to form a crust.
Brush with egg wash, and sprinkle with sugar.
Bake crostata until apples are tender and crust is golden, about 1 hour.
Let cool slightly. Serve with ice cream or whipped cream.