Method Prep:30min › Extra time:1hr chilling › Ready in:1hr30min
Add the condensed milk and butter to a saucepan and heat gently on the stovetop until the butter has melted.
In a bowl, mix the crushed biscuit crumbs together with the cocoa powder. Add the condensed milk mixture to the biscuit crumbs and stir together until well combined. Put the mixture in the fridge for about 1 hour to cool down completely.
Roll the mixture into balls (about the size of a walnut) and place on a baking tray which has been lined with greaseproof paper. Return to the fridge to chill.
Gently melt your chocolate in a heatproof bowl over a pan of simmering water.
Using a kebab stick or something similar to hold your truffles, dip them in the melted chocolate and place back on the baking tray.
Decorate as you wish. Use melted chocolate to fix decorations. Return to fridge to set.