Preheat the oven to 350F 

Using a pastry mat, roll your dough to a 14" circle and be sure it's not too thin

Mix the brown sugar, cornstarch, nutmeg and ginger together

Toss the pears and walnuts in the sugar mixture until well coated and then arrange the pear slices in a circle - layering them evenly

Leave about 2" edge all around your pie crust so that it will fold over and support the fruit

Place the frozen blueberries here and there over the pears to space them out

Fold over the pie crust as shown in the photos, the more uneven it looks, the better!

Brush the puff pastry with the beaten egg, and then sprinkle the entire pie with white sugar - just a teaspoon or so! 

Place in the bottom third of the oven and bake for 40 minutes or until the pie crust is golden

Remove and let cool for a few minutes before you move it onto a rack.  

Serve warm with whipped cream, and caramel sauce! Bon Appetit!