I try to visit this particular location every time I come to Vegas. They have a large selection of things i'm not supposed to be eating, so I just choose one. I chose the "chocolate imperial" this time. It was a rich mousse and ganache dome with a hazelnut base and vanilla cream center. I definitely needed a drink to wash this down, the ganache was incredibly intense.
I've tried a bunch of cakes from this place, and have not yet been disappointed. Definitely try to come by, it's worth a stop, especially if you're staying in City Center. The alternate bakeries (cough Va Bene cough) are a waste of time.