If using cashews, chop them up finely and soak them right away.
Peel potatoes. Dice potatoes, carrots and onion. Boil them in the 2 cups of water until soft.
Once potatoes and carrots are soft, add the mixture to a blender and allow to cool.
Add all the remaining ingredients into blender. If using cashews, drain those and add to blender at this time. Blend until cheese is extremely smooth. This cheese can be stored in a refrigerator for up to a week.