Name: Key Lime Shortbread Cookies
Ingredients: 2 T. Key lime juice (use regular limes if Key limes are unavailable); 1 1/4 c. powdered sugar, for icing; 3/4 c. powdered sugar, for shortbread; 2 c. all-purpose flour; 2 T. Key lime zest (use regular limes if Key limes are unavailable); 1/2 t. salt; 1 c. unsalted butter, cold and cubed; 1 t. vanilla extract