Line the base and sides of a 30 x 20cm rectangular baking tray with non-stick baking paper.
In a large bowl, roughly crush the biscuits and mix in the nuts, fruit and ginger.
Place the chocolate, syrup and butter in a large saucepan and heat gently until fully melted.
Pour the chocolate syrup over the biscuits and stir until all the ingredients are evenly coated.
Pour the mixture into the tin. Lay a sheet of cling film over the top and press firmly to seal. Refrigerate until firm. Cut into bite-sized squares and serve from the fridge dusted with a little icing sugar.
Store in the fridge in a tin or sealed container for up to 14 days. Suitable for freezing. Defrost in the fridge.