In a saucepan, heat the olive oil over medium heat. Add the minced garlic and saut? until fragrant, about 1 minute.

Add the fresh spinach to the saucepan and cook until wilted, about 3-4 minutes.

Pour in the heavy cream and bring to a simmer. Stir in the grated Parmesan cheese until melted and smooth.

Season with salt, black pepper, and nutmeg (if using).

Transfer the sauce to a blender and blend until smooth. Return to the saucepan and heat through before serving.