Cook pasta in generously salted water 3 minutes less than recommended on package. Drain
Meanwhile, heat oven to 350°F. Lightly spray 13x9-inch (3-quart) glass baking dish with cooking spray.
Pour 2 cups of the marinara sauce into dish. Add half of cooked pasta; toss well. Sprinkle with 1/4 cup Parmesan cheese. Spoon half of the ricotta cheese in dollops over top. Sprinkle with 1 cup of the mozzarella cheese. Repeat layers ending with mozzarella cheese. Cover lightly with foil, making sure foil is not resting on cheese.
Bake 35 minutes. Uncover; bake 10 to 15 minutes longer or until center is bubbly and thoroughly heated. Cool 10 to 15 minutes before serving.
