Brushing a cake with simple syrup helps to make the cake extra moist and stay fresh longer, and it also adds an additional punch of flavor. The cinnamon sugar syrup in this Snickerdoodle Bundt Cake is one way to achieve both a moist tender crumb and infuse more cinnamon flavor into your cake. Next time you bake, try adding a vanilla, almond, or lemon flavored simple syrup to enhance your cake.