Preheat your oven to 375°F (190°C).
Spread a thin layer of pasta or marinara sauce on the bottom of your baking dish.
Place half of the ravioli in a single layer on top of the sauce.
Pour half of the remaining sauce over the ravioli.
Add half of the shredded mozzarella cheese on top of the sauce.
Repeat the layering process with the remaining ravioli, sauce, and mozzarella cheese. Finish with shredded parmesan on top.
Cover the baking dish with aluminum foil and bake for 25 minutes. Then, remove the foil and bake for an additional 15 minutes.
Let it cool for a few minutes, garnish with chopped parsley, slice, and enjoy!