The best way to add Parmesan to a cream sauce is right at the end so it can melt in and make the sauce smooth and creamy. This 20 minute creamy garlic pasta comes together all in one pot which means you don't have to make a finicky roux or dirty extra dishes! Just cook the pasta right in the sauce, then add the freshly grated Parmesan and toss until it's melted and the sauce is coated creamy Parmesan garlic sauce.