Vanilla Bean Sugar Cookies
Ingredients 1 stick plus 2 tablespoons unsalted butter, room temperature 1/2 cup granulated sugar 1/2 teaspoon kosher salt 1 large egg, separated 1 1/2 teaspoons pure vanilla paste, or 1/2 vanilla bean, split and seeds scraped 1 1/4 cups unbleached all-purpose flour Gold and pink sanding sugar (preferably a combination of fine and coarse) Preparation In a stand mixer fitted with paddle attachment, beat butter with granulated sugar and salt on medium speed until light and fluffy, about 2 minutes....