Glaze Icing
2 cups powdered sugar
2 tablespoons water
1 tablespoon corn syrup
1/2 teaspoon clear vanilla extract
Mix all the ingredients together in a bowl
dunk the tops of the cookies into the glaze, or brush it on with a silicone brush and then sprinkle on some cinnamon sugar mixture (mix cinnamon and sugar together in a bowl to make it easy to pinch and add to the tops of the cookies)
Allow glaze to firm up before stacking cookies, usually a few hours at least.