Preheat the oven to 450 degrees F.
Spoon the pizza sauce atop the pizza dough, followed by the tomatoes and cheeses. Crack the egg in the middle. Bake until the cheese is bubbling and the crust darkens, about 5 minutes. Remove from the oven and scatter the prosciutto and basil leaves on top.
Recipe courtesy of Alie Ward and Georgia Hardstark