If you have a high-speed blender, you can skip boiling the cashews but as a general rule it doesn't hurt
If you're not using a high-speed blender, you can drain the cheese mixture through a fine sieve or nut milk bag to eliminate unblended cashew pieces and get a smoother texture
Don't substitute Tapioca with any other thickener as they won't yield the same results
Be sure to read the ingredients on the samosa pastry sheets, most supermarket brands are naturally vegan
If you don't want to make all the samboosa at one go, you can freeze them for later use