Step 2
Preheat oven to 400°F. Beat butter, confectioners’ sugar, vanilla, and salt with an electric mixer on medium speed until light and fluffy, 1 to 3 minutes. Reduce mixer speed to low and beat in flour just until combined. Shape dough into a ball, then transfer to a work surface and roll between two pieces of parchment paper to 1/8 inch thick. Fit on bottom and up the sides of a 9-inch removable- bottom tart pan. (Cut away any overhanging dough by gently running a rolling pin over the rim of the pan.) Place on a baking sheet, poke bottoms and sides with a fork and refrigerate until firm, 15 to 20 minutes. Bake until golden brown, 14 to 16 minutes. Let cool completely.