If you like a crisp edge, you can brush a little olive oil along the perimeter of the dough.
Add the diced onion and lean ground beef. Season with salt and black pepper. Cook until the beef is browned and the onion is soft, about 5-7 minutes.
Bake in the preheated oven for 12-15 minutes, or until the crust is golden and the cheese is melted and bubbly.