This is an easy recipe for basic royal icing, with a simple technique for dipping the cookies, instead of using piping bags. The icing dries firm on top with a beautiful sheen, staying a little soft underneath.
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In a bowl, combine the powdered sugar and meringue powder.
Add the vanilla (optional) and the milk/water, and stir or whisk until smooth and combined.
Let the icing drip off the spoon and back into the bowl. If the icing that drips off disappears in the bowl of icing in 5-10 seconds, then it's the right consistency for dipping your cookies (or "flooding", if you choose to use a piping bag). If it doesn't disappear, then the icing is too thick, and you should add more water, 1 teaspoon at a time. If the icing is so thin that the drizzles immediately disappear, then it's too thin, and you should add more powdered sugar, a couple tablespoons at a time.
If coloring your icing, add a few drops of gel food coloring and mix it in.
Use your icing immediately, or scrape it into an airtight, lidded container to store at room temperature for up to 3 days.
Icing the Cookies
Dip a cookie into the icing, and gently shake off the excess icing.
If there are any air bubbles on the surface of the icing, use a sharp tool, such as a cake tester or toothpick to pop the bubbles.
If you'll be decorating the tops of your cookies with sprinkles or sparkling sugar, you'll need to let the icing dry for a few minutes so that the sprinkles don't sink into the icing. But don't wait so long that the surface of the icing crusts over and prevents the sprinkles from sticking.
Let the icing dry at room temperature for several hours, before storing the cookies in a single layer in an airtight container.
Video
Notes
This recipe makes enough icing to ice approximately 2 1/2 dozen cookies that are 2 - 2 1/2 inches in diameter.
The dark color of vanilla extract will turn the icing an off-white color. If you want a pure white icing, either omit the vanilla, or use only clear extracts to flavor the icing.
Keyword Decorated Cookies, Royal Icing, Sugar Cookies