Blueberry-Nectarine Pie~

Recipe from Leslie Mackie in Baking with Julia

The Filling
3 cups fresh blueberries
2 cups sliced nectarines
3/4 cup sugar
1 1/2 tablespoons all-purpose flour
Large pinch of grated lemon zest
2 teaspoons fresh lemon juice

The Crust
1/2 recipe Flaky Pie Dough, see below 
1 tablespoon unsalted butter, cut into bits
1 large egg beaten with 1 tablespoon cold water, for egg wash
Crystal or turbinado sugar, for sprinkling

Makes 6 - 8 servings
Put half of the fruit in a medium saucepan, add sugar, flour, and lemon zest. Stir to mix. Bring to a soft boil, stirring constantly, and simmer until liquid thickens. Remove from heat, transfer into a bowl and stir in the uncooked fruit. Taste liquid, and adjust flavoring by adding lemon juice. Let cool.

Cut dough in half and on a lightly floured work surface roll one half into an 11-inch circle. Fit crust into a 9-inch cake pan with 1-inch-high sides. Allow excess dough to hang over sides. Roll remaining piece of dough into a 10-inch circle. Spoon the cooled filling into the pie shell and dot with butter. Trim the overhanging dough to 1/2 inch. Lift the 10-inch circle of dough onto the pie, aligning edges of top crust with bottom crust. Fold both layers of overhanging dough under to create a thick edge around the rim of the pan. Crimp with fingers, creating scallops every 2 inches around the rim. Press the tines of a fork against the flat scallops to decorate. Paint with egg wash and sprinkle with crystal sugar. Cut 4 to 6 slits in the crust and chill for minutes.

Position rack in center of oven and preheat to 375°F. Place pie on a parchment lined pan and bake 50 minutes or until crust is golden. Let cool 30 minutes before cutting.

Flaky Pie Dough:
5 1/4 cups pastry flour
1 tablespoon kosher salt
6 ounces cold unsalted butter, cut into small pieces
1 3/4 cups solid vegetable shortening, chilled
1 cup ice water

Makes enough dough for four 10-inch tarts

Mix flour and salt together in a large bowl.  Add butter and cut it into the flour until the mixture looks like coarse crumbs.  Break up the shortening and cut it in until mixture has small clumps and curds.  Add ice water, stirring with a spoon to incorporate.  Turn dough out onto a work surface and fold it over on itself a few times.  Wrap dough in plastic and refrigerate at least 2 hours.