Preheat your oven to 350°F.

In a large bowl, combine the ground beef, ground pork, breadcrumbs, Parmesan cheese, parsley, egg, garlic powder, onion powder, salt, and pepper. Mix until well combined.

Form the mixture into small meatballs, about 1 inch in diameter. Place the meatballs on a baking sheet and bake for 20 minutes or until cooked through.

While the meatballs are baking, cook the pasta according to package instructions until al dente. Drain and set aside.

In a large mixing bowl, combine the marinara sauce, heavy cream, sour cream, and Italian seasoning. Stir in the cooked pasta and half of the mozzarella cheese.

Once the meatballs are done, add them to the pasta mixture and stir gently to combine.

Transfer the pasta and meatball mixture to a greased 9x13 inch baking dish. Top with the remaining mozzarella cheese.

Bake in the preheated oven for 25-30 minutes, or until the cheese is bubbly and golden brown.

Let cool for 5 minutes before serving.