For the Meat Sauce:

1. 1. Preheat your oven to 375°F (190°C). Lightly spray a large baking dish with nonstick cooking spray.
2. 2. In a large skillet over medium heat, add ground beef and chopped onion. Cook until browned (about 5 minutes), then stir in minced garlic for another minute.
3. 3. Add tomato sauce, oregano, and basil to the meat mixture. Stir well and let simmer on low heat for about 10 minutes.

For the Pasta:

1. 4. Bring a large pot of salted water to a boil. Cook the ziti until al dente (about 8 minutes), then drain and set aside.
2. 5. Add the cooked ziti to the meat sauce and mix until all pasta is evenly coated.

For Assembly:

1. 6. In the prepared baking dish, spread half of the ziti mixture evenly across the bottom. Sprinkle half of the mozzarella cheese on top, then add the remaining pasta mixture. Finish with the rest of the mozzarella cheese.
2. 7. Bake in preheated oven for about 25-30 minutes or until cheese is bubbly and golden brown.
3. 8. Let cool slightly before serving. Enjoy your delicious baked ziti!