Melt 2 tablespoons butter in a saucepan over medium heat
Add 2 minced garlic cloves and cook for 30 seconds
Pour in 1 cup heavy cream
Stir and bring to a gentle simmer
Add 1/2 cup grated Parmesan cheese
Stir until the cheese melts and the sauce thickens
Season with salt and black pepper to taste
Add a little pasta water if the sauce is too thick
Toss with cooked pasta immediately
Garnish with parsley if desired