I made a royal icing plaque of the lsu tiger 
can I place it directly on a buttercream iced cake or will it go soft? I could cover the cake in fondant and attach it if that is better, but I would rather use buttercream on the layer it is going on.
Thanks in advance for any insight!
I do a lot of royal icing transfers. If you want to place it directly to the bc, you would need to apply a coat of un-colored royal icing to the back of the plaque after it dries. That will keep it from bleeding and I would also wait as long as I could before placing it on the bc. Hope that helps.
Other possible ways to handle this are:
Put the RI on fondant cut to size/shape
Put sugar cubes or mini marshmallows under it to keep it off the b'cream.
I have put RI items on b'cream w/o problems. It might soften it some but it won't melt into a puddle
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