- Preheat Oven: Preheat your oven to 375°F (190°C). Lightly grease a 9x13-inch baking dish. 
- Sauté Spinach: In a large skillet, heat olive oil over medium heat. Add the minced garlic and sauté for 1-2 minutes until fragrant. Add the chopped spinach and cook for 2-3 minutes until wilted. Remove from heat and let cool. 
- Prepare the Filling: In a large bowl, combine the ricotta cheese, Parmesan cheese, 1/2 cup shredded mozzarella, egg, Italian seasoning, salt, and pepper. Add the sautéed spinach and mix until well combined. 
- Assemble the Rolls: Lay the cooked lasagna noodles flat on a clean surface. Spread 2-3 tablespoons of the spinach-ricotta mixture evenly over each noodle. 
- Roll the Noodles: Carefully roll each noodle tightly and place seam-side down in the prepared baking dish. 
- Add Marinara Sauce: Pour the marinara sauce evenly over the lasagna rolls, ensuring all rolls are covered. 
- Top with Cheese: Sprinkle additional mozzarella cheese over the top for a gooey, cheesy finish. 
- Bake: Cover the dish with aluminum foil and bake for 20 minutes. Remove the foil and bake for an additional 10 minutes until the cheese is bubbly and golden. 
- Garnish and Serve: Garnish with fresh basil or parsley and serve hot. 
- Enjoy: Serve with a side salad and garlic bread for a complete meal.