Melt the butter in a saucepan over medium heat.
Add minced garlic and sauté until fragrant.
Stir in the heavy cream and bring to a simmer.
Reduce heat to low and whisk in the Parmesan cheese.
Continue stirring until the cheese is melted and the sauce is smooth.
Season with salt and pepper.
Optionally stir in nutmeg for added flavor.
Let the sauce simmer until thickened.
Serve immediately over cooked pasta.
Garnish with additional Parmesan cheese if desired.