Combine 3/4 cup Parmesan cheese, mozzarella cheese and ricotta cheese in a large bowl, and stir well. Add spinach, and stir well.
Spread 1/3 cup spinach mixture on each lasagna bundle. Roll up jelly-roll fashion, beginning at narrow end. Cut lasagna rolls in half crosswise, using a serrated knife; arrange, cut side down, in an 11x7-inch baking dish coated with cooking spray.
Spoon marinara sauce over lasagna rolls. Cover and bake at 350 for 45 minutes. Uncover; top with remaining 1/4 cup Parmesan cheese and bake an additional 10 minutes.