This is how I make peanut butter. Two packets of salted peanuts in a Kenwood Chef, whizz until the required texture is achieved. I put it in the fridge just as it is, and dip into it whenever I fancy some.
It stiffens up a bit in the fridge so if you want it soft whizz for a bit longer. If you want it crunchy whizz for less time.
I tried it with plain unsalted peanuts, it works. I also washed the salt from the peanuts and dried them in a clean tea towel. That works also. It's a matter of try it and see which method suits you best. You can add a spoon of oil, but there is no need, there is enough oil in the nuts.
Looks like good walking weather so I am off for a ramble.
Catch ya later. Toodle pip. ilona