I always freeze them with wax paper between the layers in a sealed plastic tub and they look and taste as good as the day they were made. NEVER freeze them if they're in individual cellophane bags -- I learned that lesson the hard way!!!
Of course, if you feel you ought to eat them just to be on the safe side, don't let me stop you (in fact, I'll help you -- send one my way!) 
what kind of icing did you use?? I've frozen very succesfully royal iced cookies (antonia's recipe), bc iced cookies and even chocolate iced cookies. haven't tried them with toba's glace or anything else...but if it's one of those, definitely do it between sheets of wax paper and when you thaw them just leave them wrapped until they're completely thawed!
these threads are about freezing cookies... hope they help!
freezing cookies
http://www.cakecentral.com/cake-decorating-ftopict-633905.html
freezing & using RI
http://www.cakecentral.com/cake-decorating-ftopict-632656.html
Quote by @%username% on %date%
%body%