Looking for advice on using cookies/biscuits as decoration. For example an Oreo cupcake and using an Oreo cookie on the top of the buttercream swirl. I find these just go soft/stale by the time the cake is ready to serve or be collected. Any advice?

thanks. 

I've only done one cake decorated with Oreo cookies and when I delivered it, I didn't notice the cookies going soft, but I didn't eat any of it.  They may have been soften a bit where they went into the buttercream, but they still stood up on the cake just fine.  I did wait until right before we left to deliver to add the cookies and candies, so it had only been maybe two hours, at the most.

Though I never thought about it I’m not surprised:)   Thanks for that information 

Though I never thought about it I’m not surprised:)   Thanks for that information 

Though I never thought about it I’m not surprised:)   Thanks for that information 

Though I never thought about it I’m not surprised:)   Thanks for that information 

Though I never thought about it I’m not surprised:)   Thanks for that information 

Though I never thought about it I’m not surprised:)   Thanks for that information 

you could dip the part that disappears into the cookie with chocolate to prevent the softening -- but yes otherwise it does soften them up -- the dry crisp cookie pulls the moisture in --