01 -
Mix 5 tablespoons milk, vanilla, powdered sugar, and corn syrup together until you get a smooth blend.
02 -
Slowly add small amounts of milk until the icing takes 3-4 seconds to settle back. Set aside 1/3 of it for outlining.
03 -
Stir more milk into the leftover icing until it smoothly spreads back in the bowl right away.
04 -
Mix in food coloring to both types of icings, if you’d like to add color.
05 -
Use the thicker icing to outline your design, then fill inside with the thinned icing. Smooth out using a toothpick.
06 -
Leave the cookies untouched for at least 20-24 hours so they completely set before stacking.