Preheat the broiler to high.

In a large bowl, combine the ground beef, egg, bread crumbs, milk, parmesan, parsley, salt, pepper, and red pepper flakes until well combined. Shape the mixture to small meatballs, a little larger than a tablespoon and place on a baking sheet in a single layer. Drizzle the top with olive oil and place under the broiler until charred and browned all around, about 10 to 15 minutes. Make sure to turn them over halfway through cooking. Remove from oven and let them cool slightly.

Preheat the oven to 475°F.

Roll out the dough, one at a time, on a lightly floured work surface into a large circle. Transfer to a pizza stone or pizza pan that has been dusted lightly with cornmeal. This will prevent it from sticking. Spread a thin layer of sauce over the top, leaving about a 1-inch border along the edges for the crust. Place a few slices of mozzarella evenly around the pizza, or sprinkle the top completely with shredded cheese if you decide to go that route. Top with the cook meatballs and sprinkle with mini pepperoni, parmesan cheese and black pepper. Repeat with the second pizza dough and the remaining toppings.

Bake until golden brown around the edges and the cheese has melted and is bubbly, about 15 to 20 minutes. Carefully remove the pizza from the very hot oven and let cool slightly before slicing and serving. Garnish with fresh basil on top. Enjoy!