The beautiful thing about stromboli, is you can layer in whatever ingredients you like. I was taught this particular version by a man from Naples, Italy. Sometimes, I'll use mortadella, soppressta or pancetta for the meats. I usually buy my pizza dough from a local pizzeria, the 14" ball size, but feel free to make your favorite dough recipe. The picture is borrowed, but this is what it should look like. Ciao!