My initial inclination is to say Yak & Yeti, because there is really only one choice there - the fried wontons - but you absolutely cannot go wrong with it!
Seriously, I would say a buffet such as Boma because that way your party can sample a number of choices. Or go whole hog and do the Wishes Dessert Party, where a) you have the most choices available and b) you are essentially making an entire meal out of desserts. If I had to pick one menu where the most desserts appealed to me I think I'd say Artist Point at WL, but that's just a matter of personal tastes.