This is simple and tasty! Cashew butter from the store is EXPENSIVE so I like to make my own. I get large cashew pieces for $4/pound saving me about $5 per pound to make it myself. I would say that is worth it!
If you want to add additional oil now is the time. I used about 2 T of coconut oil for this, but that will get hard in the fridge so I am sure you could use a refined olive oil, avocado oil, or some other liquid oil.