Follow these steps to create your Apple Delight:

1. Preheat the Oven: Preheat your oven to 375°F (190°C).
2. Prepare Apples: Peel, core, and slice the apples into thin wedges. Place them in a bowl.
3. Add Lemon Juice: Drizzle the lemon juice over the apple slices to prevent browning.
4. Mix Dry Ingredients: In a separate bowl, combine the granulated sugar, ground cinnamon, ground nutmeg, and cornstarch.
5. Combine Mixtures: Sprinkle the sugar mixture over the apple slices and toss to coat evenly.
6. Prepare Pie Crust: Roll out the pie crust and fit it into a 9-inch pie dish, allowing excess crust to hang over the edges.
7. Fill the Crust: Pour the apple mixture into the prepared pie crust. Dot the filling with small pieces of butter.
8. Cover with Crust: Fold the overhanging pie crust over the filling, creating a rustic edge. Cut slits in the top crust for steam to escape.
9. Make Egg Wash: Whisk together the egg and milk in a small bowl.
10. Brush the Crust: Brush the egg wash over the pie crust to give it a golden color while baking.
11. Bake the Pie: Place the pie in the preheated oven and bake for 40-45 minutes or until the crust is golden brown and the apples are tender.
12. Cool the Pie: Remove from the oven and let it cool for 15-20 minutes before serving.
13. Dust with Powdered Sugar: If desired, dust the top with powdered sugar for a sweet finishing touch.

With these steps followed carefully, your Apple Delight will emerge from the oven, golden and enticing!