This classic Royal Icing recipe is perfect for decorating cookies, cakes, and gingerbread houses. It dries hard and smooth, making it ideal for intricate designs and edible embellishments.
In a large bowl, whisk together the powdered sugar and meringue powder.
Add the warm water and vanilla extract (if using) to the dry ingredients.
Using an electric mixer on low speed, beat the ingredients until just combined. Scrape down the sides of the bowl.
Increase the mixer speed to medium-high and beat for 5-7 minutes, until the icing is thick, smooth, and has stiff peaks.
If the icing is too thick, add more warm water, 1 teaspoon at a time, until desired consistency is reached. If it's too thin, add more powdered sugar, 1 tablespoon at a time.
Transfer the icing to a piping bag fitted with your desired tip or use it for flooding cookies.
Decorate your cookies or baked goods and let them dry completely in a well-ventilated area. Drying time will vary depending on humidity and thickness of the icing.
Notes
Store any leftover royal icing in an airtight container at room temperature. For longer storage, cover the surface of the icing directly with plastic wrap to prevent a skin from forming.