Preheat oven to 375°F (190°C).
Spread 1/3 of the marinara sauce on the bottom of a baking dish.
Layer half of the frozen ravioli over the sauce.
Sprinkle 1 cup of mozzarella cheese on top.
Repeat layers with the remaining sauce, ravioli, and mozzarella cheese.
Top with Parmesan cheese.
Cover the baking dish with foil and bake for 30 minutes.
Remove foil and bake for an additional 10-15 minutes, or until cheese is bubbly and golden brown.
Garnish with fresh basil leaves before serving.