Combine 3/4 cup Parmesan cheese, mozzarella cheese and ricotta cheese in a large bowl, and stir well. Add spinach and sausage if using, and stir well.
Spread 1/3 cup spinach mixture on each lasagna noodle. 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 13x9-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.
Bake, Assemble
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