Slow cooker on high without lid.
Add chocolate, butter, condensed milk & vanilla extract to slow cooker. Mix every 15 minutes for 1 hour.
Break up 3 beunos and add into the mixTure. Don’t stir for long as it all melts.
Line tin with grease proof paper then pour in mixture.
Use the last Beuno for decoration then I leave to set in fridge for 5 hours.
