I am a newbie to using frosting sheets and basically icing cookies in general, other than with my kids for the holidays, so I have what many might think is a silly question . . . when I decorate cookies with my kids and make “icing”, I have always used a recipe that I found online with confectionary sugar, milk and corn syrup. It ends up shiny and quite thin. I am looking to decorate my cookies and have more of the thick non-shiny look - what I typically see under an icing or frosting sheet or in general when I see the beautiful decorated cookies on this website.
Is there a a different “recipe” or product I should purchase to get that consistency? Thanks and sorry for such a silly newbie question.