I have a similar version of the wilton giant cupcake tin, i havent used it yet but a very talented cake maker was discussing this on facebook a few days ago. She suggested to actually OVER-fill the top part of the cupcake (but put an oven tray underneath it to catch any cake mixture that spills over the edge during cooking) and fill the bottom of the cupcake pan to about an inch from the top (it should rise allmost to the top during cooking). The top part will end up...