Bring a large pot of salted water to boil. When water is boiling, add in pasta and cook al dente according to box instructions.
While pasta is cooking, add all other ingredients to a blender and blend on high until creamy. For the cayenne pepper, you can add as little or as much as you want-just be sure to taste as you go!
Mix cooked pasta with the sauce. Top with optional parmesan cheese (or dairy-free parmesan) and enjoy!