Peel, core, and slice the apples, making sure they are evenly sized for even cooking.
Mix sugar, flour, cinnamon, and nutmeg in a bowl, then coat apple slices with the mixture.
Roll one crust into a pie pan, fill with apple mixture, and dot with butter pieces.
Place the second crust over the filling, trim edges, seal, and apply egg wash.
Preheat oven to 400°F (200°C), bake the pie for 45-50 minutes, cool before serving.
Notes
Store any leftover pie in the refrigerator and gently reheat slices in the oven or microwave as needed. The pie can also be frozen for longer preservation.