*If you don’t have vanilla sugar, add 2 teaspoons vanilla extract with the egg yolk in the cookie dough mixture. Or make your own vanilla sugar: using a fork, vigorously stir ¼ cup granulated sugar and ½ teaspoon vanilla extract until the sugar is evenly colored. Spread on a dinner plate to dry, breaking up clumps.
**The warm crescents are fragile and break easily; if you’re having problems, allow them to cool longer or sift the vanilla-powdered sugar over the cookies.
Austrian Vanilla Crescent Cookies (Vanillekipferl) https://livingoncookies.com/austrian-vanilla-crescent-cookies-vanillekipferl/