I was watching John Besh of New Orleans today. He took two slices of fresh white bread and with a rolling pin, rolled them out as flat as they would go. He them took a square cut fillet of red snapper (or fish of your choice) and placed it on the rolled out bread. The bread was still larger than the fillet, so he cut it to size. He placed the two pieces in his hand and turned over so the bread was showing. Placed a couple of pats of butter on the bread and placed on a grill like a grilled cheese sandwich. When the bread was toasted, he then turned it over and with a bit of oil and seasoning on the fish, he fried the fish until done.
He said that he made this at a competition in Iceland and won with it. It looked real good.