This Caramelized Leek Pasta uses the whole leek and nothing but the leek! Well, ok, there are a few other things in here too, but this recipe is really all about the leeks. The white parts of the leek are caramelized into a deep flavorful base, and the green parts of the leeks are thinly sliced, blanched and mixed in with the pasta noodles. Everything is twirled into an easy, creamy sauce. And really what more could you ask for?