Pastry:
10 ½ Tablespoons unsalted butter
1 ½ Cups all-purpose flour , plus more for dusting
3 Tablespoons Blueberry Sugar
¼ teaspoon salt
1 large egg , beaten
Filling:
2 cups preserved pumpkin or pumpkin pie filling
½ teaspoon ground cinnamon
2 ½ Cups fresh blueberries
⅓ Cup Blueberry Honey
½ vanilla bean , split, scraped
1 Tablespoon chopped fresh mint leaves
1 sprig mint for garnish
To make pastry:
Cut butter into small cubes and place into freezer for 15 minutes. In a food processor, pulse together the flour, Blueberry Sugar and salt to combine. Break up butter, evenly placed into flour mixture; pulse until mixture resembles coarse meal. Drizzle egg in , and pulse until dough forms. Turn dough out onto a floured surface and shape into a ball, then divide into four equal pieces. Flatten with the palm of your hand to blend; gather dough up and repeat. Gather all dough together into a ball and press into a disc; wrap and refrigerate until firm enough to roll, about 30 minutes.
On a lightly floured work surface, with a floured rolling pin, roll dough into a 13-inch circle. Drape dough over rolling pin and ease into an 11-inch tart pan with removable bottom. Gently press dough against sides of pan and trim excess by running rolling pin over rim; refrigerate 20 minutes.
Preheat oven to 475°F. Line tart shell with foil and fill with dried beans or pie weights. Bake until edge begins to brown, about 15 minutes. Remove foil and beans. Bake until bottom of shell is golden brown, 3 to 5 minutes; let cool on rack 15 minutes.
To make filling:
Reduce oven temperature to 350°F. Spoon pumpkin pie filling into tart shell and spread evenly. Sprinkle with cinnamon and top with blueberries in a single layer. Bake 6 to 7 minutes; let cool.
In a microwave-proof bowl, combine Blueberry Honey, vanilla bean, and chopped mint. Microwave on high until just warm, about 15 seconds. Stir, and let stand 15 minutes. Strain honey through a fine sieve set over a bowl. Right before serving, drizzle honey over tart and garnish with mint.
