Creamy, glossy royal icing that dries firm for flawless outlines, flooding, and details—ideal for sugar cookies, gingerbread, and special-occasion bakes. Simple ingredients, bakery-worthy results!
6tbspwaterplus more as needed to adjust consistency
1tspvanilla extractuse clear vanilla to keep the icing bright white
1tsplight corn syrupoptional, for extra sheen
Optional for Coloring
gel food coloringadd sparingly; gel won’t thin the icing like liquid colors
Instructions
In a mixing bowl, whisk the meringue powder with 6 tablespoons of water until lightly foamy.
Sift the powdered sugar, then add it gradually on low speed to avoid dust clouds. Mix in the vanilla (and corn syrup, if using).
Increase to medium speed and beat until the icing is thick, glossy, and holds medium to stiff peaks, about 3 to 5 minutes. Avoid overbeating to prevent excess air bubbles.
Adjust consistency: keep thicker icing for outlining and details; thin with water a few drops at a time for flooding until it smooths out in about 10–15 seconds. Divide and tint with gel colors as desired.
Transfer to piping bags. Outline cookies with thicker icing, flood with thinned icing, and pop any bubbles with a scribe or toothpick. Let dry completely, 6 to 12 hours or overnight, before stacking or packaging.
Notes
To prevent crusting while you work, press plastic wrap directly onto the surface of any unused icing and keep bowls covered.If the icing becomes too thick during decorating, stir in water a drop at a time. If it’s too runny, mix in a spoonful of sifted powdered sugar until it returns to the desired consistency.Store icing in airtight containers in the refrigerator for up to 1 week. Re-whip briefly before using, adding a few drops of water if needed to smooth it out.