Preheat oven to 400°F. Place a baking sheet on the rack while the oven preheats.
In a large bowl, combine the sugar, flour, salt, nutmeg, cinnamon, and melted butter.
½ cup granulated sugar, ¼ cup all-purpose flour, ½ teaspoon kosher salt, ½ teaspoon ground nutmeg, ½ teaspoon ground cinnamon, 2 tablespoons unsalted butter
Toss with the sliced apples until completely coated.
5 Granny Smith apples
Gently roll out one of the pie crusts, then drape it into the pie dish, pressing all around.
14 ounces refrigerated pie crust
Pour the spiced apples into the pie pan in an even layer.
Roll out the remaining dough and place over the filling.
Crimp or flute the edges to seal the bottom and top crusts together.
Cut a few small holes or use a fork to place holes in the top crust for venting, unless doing lattice for the top crust.
Whisk one egg and then brush the top and sides of the crust.
1 large egg
Bake for about 30-35 minutes (on the preheated baking sheet) until the crust is golden brown.