I know what u are talking about, but haven't seen anything about it...
I would assume u stitch right sides together
around other edge of dresden..... then cut the backing ( behind the plates) and turn it like u would a pillowcase.
Add the center, and u would be basically covering up the hole.?
I"ll have to research for this link... sure would be easy to get nice turned under appiqued look to it with out the hassles...
Welcome from MN!