Instructions:
- In your slow cooker, add mushrooms, garlic, broth, cream, butter, salt, and pepper. Stir to combine.
- Cover and cook on LOW for 3 hours or until mushrooms are tender.
- Stir in pasta, making sure it’s submerged in liquid. Cover and cook on HIGH for 25–35 minutes, stirring once, until pasta is just tender.
- Add spinach and Parmesan cheese. Stir until spinach wilts and sauce thickens.
- Serve warm, garnished with extra Parmesan if desired.