An easy decorating option, this royal icing is made without meringue powder and using only common ingredients. Use this on your favourite sugar cookies!
Add the egg white, sugar, and vanilla to a large mixing bowl or the bowl of a standing mixer fitted with the whisk attachment.
Use an electric mixer to beat on low speed for about 2 minutes, until smooth and shiny but not fluffy. Don't over-beat, as you don't want to increase the volume much.
Divide the icing into smaller bowls and add food colouring as needed. Transfer to piping bags fitted with tips and decorate as desired.