Preheat your oven to 180°C (350°F).
Spread a thin layer of marinara sauce on the bottom of a baking dish.
Arrange a layer of frozen ravioli over the sauce.
Spread half of the ricotta cheese over the ravioli, followed by mozzarella and Parmesan cheese.
Repeat layers until ingredients are used up, finishing with mozzarella and Parmesan on top.
Sprinkle dried Italian herbs on top, if using.
Cover the dish with foil and bake for 30 minutes.
Uncover and bake for an additional 10 minutes, or until cheese is bubbly and golden.
Allow to cool slightly before serving. Enjoy!