Line a baking tray (or plate) with baking paper and set aside until needed. Place the Tim Tams in Thermomix bowl and blitz for 5 seconds on speed 7.
Add the softened cream cheese to the bowl with the crushed Tim Tams and blitz for 15 seconds on speed 5 until combined – it may take a little longer if your cream cheese isn’t completely soft.
Place the mixture into the fridge for 20 minutes to chill as it will be too soft to roll into balls.
Remove the mixture from the fridge and roll into balls (I made mine dessert spoon sized) and place on tray. Continue until all the mixture has been used. Place tray/plate into the freezer for 20 minutes to chill.
Break the chocolate into pieces and place into a microwave safe bowl. Cook for 30 second spurts until just melted.
Remove the Tim Tam balls from the freezer. Poke a skewer into the bottom of the balls and dip them in the melted chocolate. Place on plate lined with baking paper.
Put the balls back into the freezer for 20 minutes or until the chocolate has set - then serve.