Prep: Preheat oven to 375°F (190°C). Grease a 9×13-inch baking dish.,Cook Pasta: Boil ziti 2 minutes less than package instructions. Drain and rinse with cold water.,Brown Beef: In skillet over medium-high, cook beef with onion until no pink remains (5-6 mins). Add garlic; cook 1 min. Drain fat.,Make Sauce: Stir in marinara, crushed tomatoes, and seasonings. Simmer 10 mins.,Cheese Mix: In bowl, combine ricotta, egg, Parmesan, 1 cup mozzarella, and parsley.,Layer: Spread 1 cup meat sauce in dish. Add half the pasta, all the ricotta mixture, then remaining pasta. Top with remaining sauce.,Bake: Cover with foil. Bake 25 mins. Uncover, add remaining mozzarella. Bake 15 more mins until bubbly.,Rest: Let stand 10 mins before serving.