Heat oven to 425°F. With floured rolling pin, roll one pastry round into round 2 inches larger than upside-down 9-inch glass pie plate. Fold pastry into fourths; place in pie plate. Unfold and ease into plate, pressing firmly against bottom and side.
In large bowl, mix sugar, 1/4 cup flour, the cinnamon, nutmeg, allspice, vanilla and salt. Stir in apples until well mixed. Spoon into pastry-lined pie plate. Cut butter into small pieces; sprinkle over filling. Trim overhanging edge of pastry 1/2 inch from rim of plate.
Roll other round of pastry into 10-inch round. Fold into fourths and cut slits so steam can escape. Unfold top pastry over filling; trim overhanging edge 1 inch from rim of plate. Fold and roll top edge under lower edge, pressing on rim to seal; flute as desired. Cover edge with 2- to 3-inch strip of foil to prevent excessive browning. Take milk and brush over the top pastry and this will make the crust extra special.
Bake 40 to 50 minutes or until crust is brown and juice begins to bubble through slits in crust, removing foil for last 15 minutes of baking.
NOTE: If you are creative you can take the extra dough from the pastry and design leaves and put on the top crust.