Place the cashews on a half sheet pan evenly spread out. Roast in the preheated oven until lightly golden in color, about 6-8 minutes, shaking the pan once halfway through. Allow to cool for 10 minutes in the sheet pan.
Once slightly cooled, transfer the cashews to a food processor. Turn the food processor on and let it run on high for about 5 minutes, scraping down the sides with a spatula as necessary.
Once the consistency is creamy and there are no more crumbs, add the neutral oil and salt, if desired. Turn the food processor on again and blend for about 30 more seconds to incorporate the oil and salt.
Transfer to a jar or airtight container and store in the fridge, or in the pantry if you are consuming it within 2-3 weeks.
Notes
Nutritional information does not include salt or oil. This recipe makes about 1 1/2 cups of prepared cashew butter and the serving size is 2 tablespoons.Storage: Store in an airtight container in the pantry for up to 2-3 days, or in the fridge for up to 3 weeks.I use the Kitchen Aid food Processor to make this, but I would also recommend the Dash blender, Vitamix or Ninja