They differ slightly from the ham & cheese toastie we might do, because they have a bechamel sauce put on the outside before cooking so they are ......um.....creamier than the average UK toastie.
we usually get them from the Market House Deli on Main street but you can get them from other places as well (Victorias on mainstreet and a place in the studios)
I love these. You can get them in the Backlot cafe. The best one I have had is in Planet Hollywood it comes as a meal with chips and salad and is divine. A Croque Madame would have an egg on the top. However, I have not seen any of these at DLP