For the biscuits, preheat the oven to 200C/180C (fan)/Gas 6 and line two large baking trays with baking parchment. Scatter the nuts over a baking tray and roast in the oven for 6-8 minutes, or until golden-brown. Watch them carefully so that they don’t have a chance to burn. Remove from the oven, tip onto a board and leave to cool.