Rich & creamy Low-Carb Gluten-Free Alfredo Sauce is so versatile for the low carber, you can use it with almost any meal. Pasta substitutes, meats and more. This recipe for the Alfredo sauce is very simple but if you don’t feel like tackling it, feel free to use a jarred sauce. The Alfredo sauce can be made ahead of time, though you may need to add some milk when you reheat it to thin it out a bit.