While the pasta is cooking, add all of the Alfredo Sauce ingredients to a high-speed blender (starting with ¼ cup of water) and blend until smooth. If your sauce is too thick, add more water a tablespoon at a time until you get the consistency you’re looking for.
Pour sauce over cooked pasta and top with parsley.
Notes
Substitutes for Cashews: If you can't eat cashews, feel free to substitute the same amount of macadamia nuts.Nut-Free: If you're nut-free, you can try subbing sunflower seeds or hemp seeds, though the sauce will have a different flavor.