Try a tasty twist on a traditional favorite with a healthier version of pizza that incorporates a light spring vegetable that is often overlooked: the leek. Part of the allium family and related to onions, garlic, shallots, scallions, chives, and Chinese onions, leeks are used in numerous cuisines around the world. This delicious pizza is surprisingly easy and flexible, working well with a variety of cheeses and pairing deliciously with a number of other dishes.