I refrigerate all my cakes - even fondant covered ones. Yes, condensation will form on the fondant when the cake is removed from the fridge, but that will dry. Just don't touch the cake until the condensation is completely dry. Next time I would suggest icing a fondant covered cake with white chocolate ganache instead of buttercream. The ganache holds up to the weight of fondant really well - much better than buttercream.
6/18/14 at 7:14am