This post may contain Affiliate Links, which means we may receive a commission if you click a link and purchase something. Please check our Disclosure Policy for more details.
Marbled Cookies with Royal Icing
In a bowl, whisk together the icing sugar with the meringue powder, with 4 tablespoons of the water.
Using a hand mixer, on high, mix until the royal icing is drizzling at the right consistency from the whisk. If it is too thin, add more icing sugar. If it is too stiff, then add more water, teaspoon at a time.
Take 1/3 cup of the royal icing mixture, add one drop of purple gel food color, then mix until combined. Place into a piping bag.
Take another 1/3 cup of the icing, and add one drop of black gel food color and one drop of purple gel food color, and mix until combined. Place into a separate piping bag.
Marble the Icing
Place the plain white icing in a deep bowl, wide enough for the width of at least one cookie.
Drizzle both colored icing over the uncolored icing, in alternating lines. Use a toothpick or cookie scribe to drag lines through the colors to create a swirled pattern. This pattern will create that marbled look royal icing sugar cookies!