David Lebovitz was asked to remake Maida Heatter's wonderful popover recipe. They are the best the day they're made; leftovers can be stored in a container and snacked on the next day(they are still good). You could freeze them in zip-top bags as well. these work well in standard muffin tins. Feel free to use salted or unsalted butter.Adapted from David Lebovits's recipe in The New York Times and Maida Heatter's Great Book of Desserts.