• 3 cups powdered sugar, sifted (375g) sift after measuring• 2 Tablespoons light corn syrup see note• 3-4 Tablespoons milk any kind, divided• ½ teaspoon vanilla extract use clear vanilla extract for pure white icing• Gel food coloring optional• Sprinkles or candies for decorating optional
To test consistency, drizzle the icing back and forth in the bowl. The ribbon that you drizzle should hold its shape for several seconds before dissolving back into the icing in the bowl.
Pipe the icing onto your sugar cookie by outlining the cookie and filling the cookie in with icing, then using a scribing tool or toothpick to finish spreading and smoothing out the icing.
Let the frosting harden completely before stacking and storing; this can take several hours depending on how thick/thin your frosting is and the humidity in your home. Enjoy!