Lentil flour is a source of fiber and protein, and can be used to add texture, richness, and complexity to many recipes. Lentil flour can be used in baked goods such as muffins and pizza crusts, and in pasta. Chef Rebecca Peizer from The Culinary Institute of America shows us how to use lentil flour to make a lentil pasta dough, which she tops with a Puttanesca sauce.