This version of Sarde a Beccafico is served with creamy polenta that is flavored with Parmesan cheese and butter. The sardines are stuffed with a mixture of breadcrumbs, pine nuts, raisins, and parsley, and then baked in the oven until golden brown. The polenta is cooked on the stovetop until it is thick and creamy, and is then topped with the sardines. This dish is perfect for a cozy and comforting dinner.