Boil cashews for 5 minutes to soften. Blend all ingredients in a blender, except for the pasta, until smooth.
Make pasta then strain. Add pasta back into the pot and combine with the mac and cheese sauce. Stir on medium until heated through.
Serve and enjoy!
Notes
Make sure to combine the sauce with the pasta right after you strain the pasta! If you leave the pasta in the strainer it will clump together and it will make it harder to stir the sauce in.
If the sauce is too thick you can add a bit more plant-milk to thin it out.
Store this in the fridge for up to 4 days.
Make sure to boil or soak the cashews ahead of time so that they blend more easily.