- In a large bowl, combine the sliced apples, granulated sugar, flour, cinnamon, nutmeg, corn starch, salt, lemon zest, and lemon juice. 
- Toss until the apples are well coated. 
- Let the apple pie filling mixture sit for about ten minutes to let the flavors meld together. 
- When you are ready to assemble the pie, preheat your oven to 425F. 
- On a lightly floured work surface, roll out one disk of the refrigerated dough to fit your pie dish with a slight overhang when draped over the edges. 
- *Keep your top crust piece of pie dough in the fridge while you roll out and work with the bottom crust. 
- Transfer the bottom pie crust to your pie dish. 
- Carefully adjust the pie dough to cover the bottom and sides of the pie dish, trying to avoid any air pockets. 
- Spoon the apple mixture you prepared earlier on top of the bottom pie crust, piling the apples up slightly higher in the center compared to the edges. 
- Dot the apple filling with the cubed butter. 
- Roll out the second disk of pie dough, and drape over the filling. 
- Trim the excess dough off the top pie crust, and crimp the edges of the bottom and top crust together to seal the pie. 
- Cut slits in the top crust with a knife, or poke holes in the top crust with a fork, in order to allow the steam to escape while baking. 
- Brush the top crust with the egg wash, then sprinkle with a bit of additional white granulated sugar. 
- Place the pie dish with the assembled pie on a sheet tray. 
- *The sheet tray is just there to catch any filling that might escape from the pie while baking. 
- Bake for 20 minutes at 425F, and then reduce the oven temperature down to 350F. 
- Continue to bake at 350F for an additional 20-30 minutes, or until the crust is golden-brown and the filling is hot and bubbly. 
- *If the edges of the pie are browning too quickly, you can cover them with a bit of aluminum foil. 
- Let the pie cool for at least an hour before slicing, to allow the filling to set. 
- Serve with a large scoop of vanilla ice cream.