Remove pie pastry from refrigerator and let thaw, about 10 mins.
1 box Refrigerated pie pastry
Preheat oven to 450 degrees F.
Peel skin off of peaches and then slice and add to a large bowl along with the blueberries. Add the next 7 ingredients and stir gently to combine.
6 each Peaches, ½ cup Blueberries, ½ cup Sugar, 2 tbsp Brown sugar, ¼ cup Flour, ½ tsp Cinnamon, ¼ tsp Nutmeg, ½ tsp Salt, ½ Lemon
Unroll 1 pastry dough and place into pie plate. Add peach/blueberry mixture to pie plate.
1 box Refrigerated pie pastry
Cut up the butter into small pieces and place on top of peach/blueberry mixture
2 tbsp Butter
Unroll the 2nd pie pastry and place on top of pie, crimping the ends together with a fork or your fingers. Cut a few slits in the top of the pastry.
1 box Refrigerated pie pastry
In a small bowl whisk the egg and brush on top of the pie.
1 Egg
Bake in 450-degree F oven for 10 minutes then lower oven temperature to 350-degrees F and bake for 40-55 minutes (depending on the depth of your pie plate).