Instructions:

Add the roasted peanuts to a food processor or blender.
Blend the peanuts on high speed for 1-2 minutes until they start to break down into a crumbly texture.
Scrape down the sides of the food processor or blender and continue blending.
Add the honey and salt (if using) and blend again for another minute.
While the food processor or blender is running, slowly pour in the oil until the peanut butter reaches your desired consistency.