Adjust your oven rack to the middle position. Preheat oven to 350 degrees F. Place almond on a rimmed baking sheet and roast until aromatic, about 12 minutes. 

Transfer the almonds to the bowl of a food processor or place into a high powered blender. Blend until smooth. If the almond butter seems dry, add the almond oil. 

Once the almond are ground into smooth butter, stop the machine and add the powdered sugar and cocoa powder. If using vanilla and salt, add these at the same time. Blend until smooth. This takes about two minutes. 

Store in a airtight container, on the counter or in the refrigerator,  for up to one month.