About an hour before baking time, remove the dough from the refrigerator and roll it into 1/8" thick 12" circle. Gently lift the dough and place it in a 9" x 2" pie pan. Shape the top tedges using the knuckle of your finger. Place back in the refrigerator for about 30 minutes.
Roll the smaller part of the dough into 10"-12" circle and use a leaf-shaped cookie cutter to create the design. Place the rolled dough on a cookie sheet lined with baking paper and return to the refrigerator to cool.
Blackberry Ginger Filling and assembling
About 30 minutes before baking, preheat oven to 400F. Place an oven rack at the lowest shelf and line a large baking pan with baking paper.
Place the filling ingredients in a large bowl and gently toss for even distribution.
Remove the pie shell from the refrigerator and pour the blackberry filling in.
Place the top crust on top of the filling and seal the edges.
Brush the pie with the beaten egg. Sprinkle with turbinado sugar.
Bake on top of the line baking pan for 50-60 minutes or just until the filling in bubbling.