In a small bowl, combine the ricotta cheese, garlic, Italian seasoning, and ⅓ cup of the Parmesan cheese.
Spread 1 cup of spaghetti sauce in the bottom of the 9x13 pan. Top with half of the ravioli and another cup of sauce.
Spoon the ricotta cheese mixture over the ravioli and spread out to form an even layer. Top with 1½ cups of mozzarella.
Top the casserole with remaining ravioli, mozzarella, and Parmesan.
Cover the ravioli lasagna casserole with foil and bake at 350ºF for 35 minutes. Remove foil and bake an additional 10 minutes or until golden brown and bubbly around the edges.