Preheat your oven to 375°F (190°C).

Bring salted water to a rolling boil in a large pot, add ziti pasta, and cook until al dente, about 8 minutes. Drain and set aside.

Heat olive oil in a large skillet over medium heat. Add onions and garlic; sauté until translucent and fragrant, about 3-4 minutes.

Introduce ground beef or sausage, breaking it apart as it cooks until browned, about 5-7 minutes. Stir in marinara sauce and Italian seasoning, simmer for 5 minutes.

In a mixing bowl, combine ricotta cheese, beaten egg, grated Parmesan, salt, and pepper. Mix until creamy.

In a greased baking dish, layer half of the cooked ziti, half of the ricotta mixture, sprinkle mozzarella, and half of the meat sauce. Repeat layers.

Cover tightly with aluminum foil and bake for 20 minutes.

Remove the foil and bake uncovered for an additional 10-15 minutes until bubbly and golden brown.

Let rest for 5 minutes before serving. Garnish with fresh basil or parsley.