Mix the peaches, strawberries, sugar, cornstarch, flour, zest and juice of lemon, dash of cinnamon, and vanilla.
Mix well in a large bowl and pour out into chilled crust.
Dot the top of the filling with the butter.
Brush the edges of pie crust with the egg white wash.
Roll out the other piece of dough and place over filling.
Crimp to seal edges and cut four slits in the middle to let the steam out while baking.
Brush with egg white wash and garnish with large granule sugar.
Collar with foil and bake at 425 degrees F for 15 minutes.
Decrease temperature to 375 degrees F and bake for an additional 45 to 50 minutes, or until the filling starts bubbling. Let cool a little before serving.
Enjoy!