Preheat the oven to 375°F (190°C). Cook the ziti pasta according to package instructions until al dente. Drain thoroughly.
Combine the pasta and filling
In a large mixing bowl, combine the cooked pasta with 1 ½ cups of pasta sauce, ricotta cheese, shredded mozzarella, parsley, beaten egg, oregano, garlic powder, salt, and black pepper. Mix until evenly coated.
Assemble the dish
Lightly grease a 9×13×2-inch baking dish. Transfer the pasta mixture into the dish, spreading it evenly. Top with the remaining 1 ½ cups of pasta sauce, then sprinkle the Parmesan cheese evenly across the surface.
Bake the ziti
Cover the dish with aluminum foil and bake for 30 minutes, or until the cheese is melted and bubbling.
Rest and serve
Remove from the oven and allow the baked ziti to rest for 5 minutes before serving. Serve warm for best results.
Notes
To prepare a gluten-free version of this recipe, substitute the ziti pasta with certified gluten-free pasta. Additionally, ensure the pasta sauce is labeled gluten free. All other ingredients in this dish are naturally gluten free.