Mary Ann starts off her cooking class by preparing a colossal Cauliflower Casserole packed with Parmigiano Reggiano cheese and crispy bread crumbs. Then she invites student Lisa to joins her and learn the fine art of creating a crunchy Cauliflower Salad with Tuna and Chickpeas that goes with anything, anytime. The secret ingredients that sends this dish high above the competition? Oil-packed tuna fish, tomatoes in olive oil, and dried oregano.