My first thought was Le Veau d'Or but it's entirely prix fixe. Some menu items there are....iffy...but the oeufs à la neige (as I recall it's labeled) is my must-order. Even tho I'm lactose intolerant!
I've seen Ile Flottante on the dessert menu at La Bateau Ivre on E. 51st St. I usually go there for a little wine and desserts after the dinner hours. They're open late.