foodpump is right on with the raclette.
I have done raclette on the main street of the town of Gruyeres, they bring a very nice little salamander right to your table (of much better quality and grilling power than these cheesy things that have shown up in gourmet shops lately as "raclette" units).
MLKGMK if what you are asking for is a dessert you can grill in whatever unit you have, two things that pop to mind are pineapple slices, or to toast marshmallows and make s'mores.
With raclette as in cheese, I'd probably just have a nice ice wine for dessert, if that. In Switzerland, the quantity of cheese served per person was usually close to a pound, then it somehow always seemed to disappear :blush: , so I'm thinking very light on the dessert or no dessert would be even more appropriate, just have a nice white wine with the cheese and continue to sip afterward.