Instructions:
1. Cook the pasta according to package instructions until al dente, then drain.
2. In a slow cooker, combine the cooked pasta, Alfredo sauce, and fresh spinach leaves.
3. Stir everything together until the pasta is well coated and the spinach is evenly distributed.
4. Cover and cook on low for 1-2 hours, or until the spinach is wilted and the sauce is heated through.
5. Just before serving, stir in the grated Parmesan cheese until melted and creamy.
6. Serve hot, garnished with extra Parmesan cheese if desired
