In a high speed blender or food processor combine the peanut butter, nut milk (we use almond milk), and cacao powder. Blend until smooth. You may have to stop and scrap down the sides a few times. 

If you want it thicker add more peanut butter. Want a thiner dip? Add more nut milk. 

Serve with apple slices. Also goes well with pretzels and gram crackers.