Linda, I hven't worked with it yet, however I think I would work with the minky as the top using my walking foot. depending on how the "backing" was pieced then perhaps I would then choose to use my quilting/darning foot. Perhaps, using a water soluble pen to mark the minky so you know your quilting would land in the appropriate place for your "backing"
I know it's all a little backwards, but I hope this helped.
Lissette