Potato, Leek, and Bacon Ravioli
Almost every region of northern Italy has some version of potato-stuffed ravioli. The potato is a constant, whereas the flavoring may change, from onion to chard to raisins to pine nuts. You can come up with some of your favorites. But in my house everybody loves potato-and-bacon ravioli, even fussy kids. You can do all the cooking ahead of time if you want—just mash up the filling while it’s still warm, then refrigerate.