Preheat the oven to 375°F (190°C).

Bring a large pot of salted water to a boil and cook the pasta until al dente, about 8-10 minutes.

In a skillet, heat olive oil over medium heat and add marinara sauce. Let it simmer gently for about 5 minutes.

In a bowl, combine ricotta, egg, Italian seasoning, salt, and pepper until smooth.

Drain the pasta and mix it with the marinara sauce in a large bowl.

In the baking dish, spread half of the pasta mixture, then dollop half of the ricotta mixture and sprinkle half of the mozzarella. Repeat the layers.

Top with the remaining mozzarella and Parmesan cheese.

Bake in the preheated oven for 25-30 minutes until the top is golden and bubbly.

For an extra crispy top, broil for the last 2-3 minutes, watching carefully to prevent burning.