Creating Olive Garden Five-Cheese Ziti al Forno is a straightforward process if you follow these detailed steps:

1. Preheat the Oven: Preheat your oven to 375°F (190°C) and grease a 9×13-inch baking dish with olive oil.
2. Cook the Pasta: Boil a large pot of salted water. Add the ziti pasta and cook until al dente, about 7-9 minutes. Drain and set aside.
3. Prepare Cheese Mixture: In a large mixing bowl, combine the ricotta cheese, 1 cup of mozzarella, provolone, parmesan, romano, Italian seasoning, garlic powder, salt, and black pepper. Mix thoroughly.
4. Mix with Marinara: In another bowl, combine the cooked ziti pasta with the marinara sauce. Stir until the pasta is well coated.
5. Layer Ingredients: In the greased baking dish, add half of the ziti mixture. Spread half of the cheese mixture on top. Repeat the layers with the remaining ziti and cheese mixture.
6. Top with Cheese: Sprinkle the remaining mozzarella cheese on top of the layered dish.
7. Bake: Cover the baking dish with aluminum foil and bake in the preheated oven for 20 minutes. Remove the foil and bake for an additional 20 minutes, or until the top is golden and bubbly.
8. Cool: Remove from the oven and let it cool for about 5-10 minutes before serving, allowing it to set.
9. Garnish: If desired, garnish with fresh basil leaves for a pop of color and flavor.