Melt the unsalted butter in a saucepan over medium heat.
Add the minced garlic and sauté for about 1 minute until fragrant.
Pour in the heavy cream and bring to a gentle simmer.
Reduce heat to low and stir continuously.
Gradually add the grated Parmesan cheese, stirring until melted and smooth.
Season with salt and pepper to taste.
Continue to cook for an additional 2-3 minutes until the sauce thickens.
Remove from heat and let cool slightly before serving.
Toss with cooked fettuccine or your pasta of choice.
Garnish with chopped parsley and additional Parmesan cheese if desired.