In a greased 9x13-inch baking dish, combine the pasta, marinara sauce, broth, meatballs, garlic powder, onion powder, dried oregano, and salt. Stir until evenly mixed.
Wrap the dish with aluminum foil and bake for 35 minutes. Take off the foil, stir, and ensure the pasta is al dente.
Evenly sprinkle mozzarella on top, then bake uncovered for 5-10 more minutes, until the cheese is melted and bubbly.
Let the casserole cool for 10 minutes before serving. Sprinkle with fresh basil for garnish.