Holiday Apple Pie

8 cups peeled and sliced granny smith apples
2 tablespoons all purpose flour
1 cup sugar
1 teaspoon cinnamon
1/2 teaspoon nutmeg
1/4 teaspoon pure vanilla extract
pinch of salt
2 teaspoons fresh lemon juice
2 tablespoons butter
1 egg yolk
1 tablespoon water

Preheat oven to 375F.

In a large bowl combine apple slices, sugar, flour, cinnamon, nutmeg, salt, and lemon juice. Place mixture into pie crust. On a lightly floured surface roll remaining pastry dough and cut into strips. Place strips on top of apple pie making a crisscross pattern. Mix the egg yolk and water in a small bowl and lightly brush the top of the pie. Bake for approximately 45 minutes.

Serve warm topped with custard or whipped cream.