I have a "Happy birthday" sign made out of royal icing that I would like to attach to my buttercream cake and I was wondering what the best way to do this is.

Im worried aout the buttercream "melting" the royal icing, thats why I havent just stuck it up there.

This cake is suppose to be done in 2 hours so any help would be greatly appreciated!

Thanks!

If the royal sign has already hardened you'll be fine to attach it anytime.

You can put piping gel on the back, some melted chocolate, more royal icing.

It takes a fairly long time for a dry royal plaque to begin to break down, especially if it's on crusting buttercream. If you want to be uber careful, you can press pieces of marshmallows (about the size of a mini marshmallow) into the icing, pipe a bit of royal on each piece and set the plaque on that. It makes for easy removal and saving of the item.

HTH
Rae

Or you can also turn it on the back side, and get a dowel, sit it on the image and apply RI let it dry and stand the image in the cake....another options.