Preheat the oven to 375°F (190°C).
Bring a large pot of salted water to a boil. Add the ziti pasta and cook according to package instructions until al dente, about 8-10 minutes. Drain and set aside.
In a large skillet, heat olive oil over medium heat. Add the chopped onion and cook until softened, about 3-4 minutes.
Add minced garlic to the skillet and cook for 1 minute until fragrant.
Add ground beef to the skillet. Cook, breaking it up with a spoon, until browned and cooked through, about 6-8 minutes.
Season the beef mixture with salt, black pepper, dried oregano, and dried basil. Stir to combine.
Pour marinara sauce into the skillet with the beef mixture. Stir well and simmer for 5 minutes.
In a large mixing bowl, combine the cooked ziti pasta and the beef and marinara sauce mixture. Mix until the pasta is evenly coated.
Add the ricotta cheese to the pasta mixture and stir gently to combine.
Transfer half of the pasta mixture into a 9×13 inch baking dish. Sprinkle 1 cup of shredded mozzarella cheese evenly over the pasta.
Add the remaining pasta mixture on top and sprinkle with the remaining 1 cup of shredded mozzarella cheese and grated Parmesan cheese.
Bake uncovered in the preheated oven for 25 minutes, or until the cheese is melted and bubbly.
Remove from the oven and let it rest for 5 minutes.
Sprinkle chopped fresh parsley over the baked ziti before serving.