In a large bowl, combine sugar, flour, cinnamon and allspice. Add peaches and blueberries; toss to coat.
Preheat oven to 400°. On a lightly floured surface, roll one half of your dough and place in a 9-in. pie plate. Add filling to crust. Dot with butter
Roll out remaining pie crust and lay in a lattice pattern * see above post for how to instructions.
Trim and seal strips to edge of bottom pastry; flute edge. Brush lattice strips with beaten egg, very carefully..don’t want cooked egg on the filling :)wire rack.
Sprinkle with cinnamon sugar.Bake 40-45 minutes or until crust is golden brown and filling is bubbly. You may need to add a piece of foil near the end so the crust doesn’t get too brown.