Begin by draining and rinsing the chickpeas. Then, melt the dark chocolate either in the microwave or on the stovetop.
In a food processor, combine the chickpeas, cashew butter, melted chocolate chips, and instant coffee. Blend for 45-60 seconds until well incorporated.
Use a cookie scoop to portion the batter onto a parchment-lined baking sheet. Roll into smooth balls and freeze for 15-20 minutes until firm.
Meanwhile, melt the additional dark chocolate for dipping. Coat the chilled truffles evenly with chocolate and garnish with coffee beans.
Return the coated truffles to the freezer to set completely.
Store the truffles in the fridge for 7-10 days or in the freezer for 30-60 days.