Combine all ingredients in blender until smooth. Add just enough water to help things blend smoothly. Transfer cashew cheese to bowl and set aside.
Use a mandolin slicer or vegetable peeler to slice the cucumber into thin strips (about ⅛").
Lay each cucumber slice down and spread a thin layer of cashew cheese over it. Place a piece of pepper, cucumber, radish and onion in the corner. Gently roll cucumber around vegetables.
Repeat until everything is used. Enjoy fresh!
Recipe by The Colorful Kitchen at https://thecolorfulkitchen.com/2015/06/21/raw-cucumber-roll-ups-vegan-gluten-free/