This couldn't be easier! Simply chop up the vegan cheese slices. I've found that Daiya American to be the best, but others should work fine too.
Add that to a pot over medium heat, stirring frequently until melted.
Then pour that into a non-stick container. I use a square silicon mold, but glass Tupperware should work too. You can also line something with parchment paper so it won't stick if you're unsure.
Let it cool for about 30 minutes, and do not cover it! Refrigerate overnight, uncovered. This is so it dries out a little so it's not too soft to shred. Covering will trap moisture and it may cause it to be too soft.
The next day you can take it out, and grate it how you normally would! It will clump so I recommend storing it loosely packed.
Use within 1 week and enjoy!