Add all-purpose flour, powdered sugar, and salt to food processor. Pulse once or twice to combine.
Add cold cubed butter to food processor and pulse until the mix resembles coarse sand.
Add egg and vanilla bean paste to food processor. Pulse just long enough for the dough to start coming together.
Transfer dough to flat surface. Press dough together into ball. Flatten into disc.
Wrap in plastic wrap and refrigerate for 1 hour, or up to 3 days.
Preheat oven to 375 degrees F.
Remove dough from refrigerator. Place dough on lightly floured surface and roll out into 11-inch circle.
Place dough round into 9-inch removable bottom tart pan.
Press dough into sides and bottom of tart pan.
Place parchment circle in tart pan, fill with pie weights.
Bake tart crust in preheated oven for 20 minutes.
Remove tart pan from oven and cool completely.