01 - Preheat oven to 375°F.
02 - In a food processor, combine flour, sugar, and salt. Add cold diced butter and pulse until the mixture resembles coarse crumbs.
03 - Add egg yolk and 2 tablespoons ice water; pulse until dough just comes together, adding an additional tablespoon of water if necessary.
04 - Turn dough onto a floured surface, shape into a disk, wrap in plastic wrap, and refrigerate for 20 minutes.
05 - Roll out the chilled dough to fit a 9-inch tart pan. Press into the pan, trim excess, and prick the base with a fork.
06 - Line the crust with parchment paper and fill with pie weights. Bake for 15 minutes, remove weights, then bake 5 minutes more until lightly golden. Cool before filling.
07 - In a saucepan, combine cranberries, sugar, orange juice, orange zest, and vanilla extract. Cook over medium heat, stirring frequently, until cranberries burst, about 8 minutes.
08 - Mix cornstarch with water to create a slurry. Stir into the cranberry mixture and cook 1 to 2 minutes until thickened. Remove from heat and let cool slightly.
09 - Spread the cranberry filling evenly into the cooled tart shell.
10 - Bake for 20 minutes, or until the filling is set and crust is golden.
11 - Allow tart to cool completely. Dust with powdered sugar and garnish with orange zest curls if desired.