Prepare the crust by rolling out the pastry dough to about a 12-inch circle, place it in a 9-inch pie plate, trim excess, and refrigerate.

Make the filling by mixing sliced apples with sugar, flour, cinnamon, salt, nutmeg, and lemon juice. Let it rest for about 10 minutes.

Assemble the pie by placing the apple filling in the bottom crust, dot with butter, cover with the top crust, seal edges, and cut slits for steam.

Bake at 425°F (220°C) for 15 minutes, then reduce to 375°F (190°C) and bake for another 30 minutes until golden brown.

Cool the pie on a wire rack for at least an hour before serving it warm with a scoop of vanilla ice cream.