Sara's viewers love 5-ingredient recipes, so why not six? Her frittata has a secret ingredient - leftover spaghetti - enlivened with rich brie and bacon, and on the table in minutes. You could save the spaghetti from another pasta favorite - peppery broccoli pasta with feta. Her duck confit with braised leeks and sauerkraut is nice enough for company. Plus, Sara answers a viewer's question about perfectly flattened chicken breasts.