Cook the noodles per package instructions and set aside. In a large skillet over medium high heat add the olive oil and diced onions. Allow the onion to cook for 3-4 minutes until they start to soften. Add in the ground beef and cook it until no pink is visible within the meat. Once the meat is finished cooking, add the minced garlic and cook for an additional 30-45 seconds. Drain off any excess grease.
Season the meat with Italian seasoning, paprika, onion powder, garlic powder, salt and pepper. Add the pasta sauce and stir to combine. Toss in the cooked spaghetti noodles.
Preheat oven to 350 degrees. Cut a circle in the top of the bread boules and dig out the excess bread, making sure to leave some bread to serve as a lining for the inside of the bowl. In a small mixing bowl combine the melted butter, garlic powder and parsley. Baste each bowl with the butter mixture. Fill each bowl with spaghetti and top with mozzarella. Bake for 5-10 minutes or until the cheese is melted. Serve and enjoy!