What are good resturants that are open after 11, and good for desert?

My boyfriend likes to take me out for desert at night after we eat dinner. We can have a nice meal at home, and go out for desert so we can get the feeling of going out together and being treated for a bit, but not paying for the big expensive dinner too. He also works late, so by the time we get done with dinner it's after 11. Know of any good general places? Price really doesn't matter....