Heat olive oil over medium heat in large skillet. Add ground beef, onion, garlic powder, basil and oregano. Brown the beef, breaking up, until nicely browned. Add Worcestershire, diced tomatoes, marinara and parsley. Stir.
Add your pasta shape of choice and stock. Increase heat to high and bring to a simmer. Once it boils, lower heat to medium. Cover and cook for 15 minutes or until pasta is done, giving it a few stirs.
Once done, add sliced (or shredded) mozzarella to top and replace lid until melted. Or, you can remove lid and place oven-safe skillet under oven broiler until mozzarella is browned. Scatter parsley across all and serve!