Drizzle a round pizza pan or a rectangular baking sheet with olive oil. Spread the dough into the pan to form your crust. Poke the pizza dough in several places with the tines of a fork. Drizzle the dough with olive oil, then season it with the rosemary and a little salt. Bake for 10 minutes.
Heat a large, nonstick skillet over medium-high heat. Add the beef. Brown and crumble the meat for a couple of minutes, then add the onions and garlic. Season the meat with salt and pepper, then work in the tomato paste using the back of a wooden spoon. Stir in the Parmesan cheese, parsley and oregano.
Remove the pizza crust from the oven and top with the meat mixture. Arrange the mozzarella cheese over the pizza, working from the center to the outside edge. Return the pizza to the oven and bake until the cheese is golden, another 10 to 12 minutes.
Let pizza sit for a few minutes, then cut into slices and serve.