In a mixing bowl, combine the ricotta cheese, egg, chopped basil, garlic powder, salt, and pepper. Stir until smooth.
Grease a 9x13-inch baking dish with olive oil.
Spread a thin layer of marinara sauce on the bottom of the baking dish.
Layer half of the ravioli on top of the marinara sauce.
Spread half of the ricotta mixture over the ravioli, followed by one cup of shredded mozzarella cheese.
Pour another layer of marinara sauce over the cheese.
Repeat the layering process with the remaining ravioli, ricotta mixture, and another cup of marinara sauce. Top with remaining mozzarella and sprinkle with Parmesan cheese.
Cover the dish with aluminum foil and bake for 25-30 minutes.
Remove the foil and continue baking for an additional 15-20 minutes until the cheese is bubbly and golden brown.
Allow the lasagna to cool for 10-15 minutes before slicing.
Serve warm and enjoy!
Notes
Ravioli Lasagna can be prepared ahead of time and stored in the refrigerator for up to a day. You can also freeze it before baking.