Foolestroupe, we use one of those in our restaurant and call it a panini, though we make the sandwiches with focaccia bread. In theory that might work, but the true patty melt involves so much butter and goo that you need something easily cleaned. Besides, you really should grill in in the same place you grilled the onions and burger, and my panini grill has ridges, so it wouldn't be QUITE the same.

Mick, you can TRY the Berlin Diner, but it won't be as good ; )

Dani