Confectioners' sugar glaze is most often used in dessert recipes, especially coffeecakes, pound cakes, pastries, sweet rolls and cookies. This sweet icing may be a simple paste of powdered sugar and water for cookies, or may be a richer blend for cakes and pastries with butter, milk and confectioners' sugar.
Some cookie, cake and pastry recipes use a confectioners' sugar glaze that is enhanced with additional flavors, such as vanilla extract, lemon juice or orange juice. The glaze can also be tinted with food coloring for a decorative touch. Cookies may be dipped in the glaze, it can be drizzled onto pastries using a spoon, or the mixture can be piped onto cakes using a pastry bag.