Preheat your oven to 375°F (190°C) and grease a 9x13 inch baking dish with olive oil.

Cook pasta in boiling salted water until al dente (about 8-10 minutes). Drain and set aside.

Sauté minced garlic in olive oil for 1 minute, then add spinach and cook until wilted (2-3 minutes).

In a mixing bowl, blend ricotta, half of mozzarella, half of Parmesan, salt, pepper, and optional Italian seasoning. Fold in spinach mixture.

Spread half of marinara sauce in baking dish, layer with half the pasta and ricotta mixture, then repeat. Top with remaining mozzarella and Parmesan.

Bake for 20-25 minutes until cheese is bubbly and golden.

Let it rest for 5-10 minutes before serving.