This traditional Sicilian focaccia is an oven-baked flatbread topped with an oregano-flavored tomato sauce made with the addition of onions, anchovies, breadcrumbs, and local cheeses such as caciocavallo, provolone, tuma, or ricotta. Sfincione is one of the island's favorite street foods, especially in Palermo, where street vendors are often seen driving around in their three-wheeled Piaggio Ape food trucks shouting "Scairsu r'uogghiu e chin'i pruvulazzu" (lit. little oil and lots of dust), referring to the crusty breadcrumb topping.