Hi CC'ers

Juat need to know how do i reuse buttercream that has been frozen for the past week or so. Had a lot leftover from the cake I did last week. It was sugarshacks recipe for crustign buttercream.

I thought maybe i should of just put it in the fridge and not the freezer. But I placed it int he freezer and unsure what to do to reuse it.

thanks a bunch