Place the chocolate biscuits and coffee granules into a food processor and crush until they resemble fine crumbs.
Mix biscuit crumbs with the cream cheese.
Place into the fridge/freezer for at least 30 minutes to harden.
Roll into 1 inch sized balls and place on a tray lined with baking paper.
Place back into the fridge for 20 minutes.
Place chocolate into a microwaveable bowl and microwave on 50% power for 2-3 minutes, stirring every 30 seconds, until chocolate is completely melted.
Place the truffles into the bowl of melted chocolate (in batches) and use two forks to roll the truffles around until they are completely coated.
Remove truffles with the forks and allow any excess chocolate to drip off.
Place back onto the baking paper lined tray and decorate with dark chocolate drizzled over the top.
Place into the fridge to set for 1 hour.