In a saucepan over medium heat, melt the butter.
Add the minced garlic and cook for 1-2 minutes until fragrant.
Pour in the heavy cream and bring to a simmer.
Stir in the grated Parmesan cheese until melted and smooth. Season with salt, pepper, and a pinch of nutmeg. Set aside.
In a large bowl, mix the cooked pasta with the Alfredo sauce. Ensure the pasta is well coated.
If adding chicken, mushrooms, sun-dried tomatoes, or spinach, mix them in with the pasta and sauce.
Preheat your air fryer to 360°F (180°C).
Transfer the pasta mixture to a baking dish that fits in your air fryer.
Place the dish in the air fryer basket and air fry for 10-12 minutes, or until the top is slightly golden and the sauce is bubbly.
Carefully remove the dish from the air fryer. Garnish with additional Parmesan cheese and chopped parsley. Serve hot as a comforting and creamy me