here's the recipe http://cakecentral.com/a/rolled-buttercream
I use it all the time. It's easy, tastes great, and cuts out flooding and drying time. Just put it on, and detail over it, outline around it, whatever, I even press designs into it.
I keep a squeeze bottle with light corn syrup and those small tips that come with the squeeze bottles to use as my 'glue'
What I do is, Using a shaker of powdered sugar (like you would flour in baking cookies) I roll the RBC out...