Step 1

Put the biscuits into a plastic bag and hit with a rolling pin until crushed into small pieces. Transfer to a bowl. Add cocoa powder, walnuts and 1/4 of the coconut. Make a well in the centre.

Step 2

Add the condensed milk. Mix together with a wooden spoon until evenly moistened. Chill for 30 mins.

Step 3

Spread the remaining coconut onto a plate. Roll level tablespoons of the mixture into balls then make slightly egg shaped. Roll in the coconut. Keep in an airtight container in the fridge.