Bring a large pot of salted water to a boil. Add the spaghetti and cook according to package instructions until al dente. Drain and set aside.

In a skillet over medium heat, add the ground beef and cook until browned. Drain excess fat.

Add chopped onion and minced garlic to the skillet. Sauté until the onion is translucent.

Stir in crushed tomatoes, tomato paste, oregano, basil, salt, pepper, and beef broth. Bring to a simmer and cook for about 20 minutes, stirring occasionally.

Add the cooked spaghetti to the meat sauce and toss to combine. Serve hot, garnished with grated parmesan and chopped parsley.