1. Preheat oven to 375°F (190°C) and lightly grease a 9×13-inch baking dish.

2. Cook ziti in salted boiling water until al dente, then drain and drizzle with olive oil to prevent sticking.

3. In a large skillet, cook ground beef or sausage over medium heat until browned; drain excess fat.

4. Add marinara sauce, Italian seasoning, salt, and pepper; simmer for 5 minutes.

5. In a large bowl, mix ricotta, sour cream (if using), half the mozzarella, and half the Parmesan.

6. Add cooked ziti to the sauce and stir to combine.

7. Spread half the pasta mixture into the baking dish, top with ricotta mixture, then layer the remaining pasta.

8. Sprinkle the rest of the mozzarella and Parmesan over the top.

9. Cover with foil and bake for 20 minutes, then uncover and bake another 10 minutes until bubbly and golden.

10. Garnish with fresh basil or parsley and serve warm.