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

In a large pot of boiling salted water, cook 12 oz of pasta until al dente, about 8-10 minutes. Drain and set aside.

In a skillet, heat 1 tbsp of olive oil over medium heat. Sauté 2 cloves of minced garlic for 1 minute, then add 2 cups of spinach and cook until wilted, about 2-3 minutes.

In a large mixing bowl, combine 1 cup of ricotta cheese, half of the mozzarella (1/2 cup), half of the Parmesan (1/4 cup), 0.5 tsp of salt, 0.25 tsp of black pepper, and 1 tsp of Italian seasoning. Stir in the sautéed spinach and garlic.

Spread half of the marinara sauce (1 cup) at the bottom of the greased baking dish. Layer with half of the cooked pasta, then the ricotta-spinach mixture, then the remaining pasta and top with the rest of the marinara sauce.

Sprinkle the remaining mozzarella and Parmesan cheeses evenly over the top.

Place in the preheated oven and bake for 20-25 minutes until the cheese is bubbly and golden brown.

Let the dish cool for a few minutes before serving to allow the layers to set.