Add peanuts into a food processor. Set to high for 2 -3 minutes until it starts to form a paste-like texture.
Add in coffee grinds and coconut oil to the processor. Set to high and mix for another 2-3 minutes until it forms a liquidy consistency. Pour into a mason jar and enjoy! I would store this in the cupboard for 1-2 weeks and in the fridge for 3 weeks.
Note - depending on the power of your food processor, you will need to mix for longer than the times indicated above. In my old less powerful food processor, I had to mix for roughly 10 minutes to make nut butter.