Put the flours, sugars, spice, citrus zests and butter into a bowl and rub together using your fingertips until the mixture first resembles breadcrumbs and then starts to bind together. Knead briefly and gently until the mixture forms a smooth biscuit dough
Roll out on a lightly floured work-surface to approximately ½ cm (¼ inch) thick. Press out circles of the dough using a pastry cutter with a diameter around 7cm (2 ½ inches). R-roll the dough once and cut out any extra biscuits that you can
Using a much smaller cutter* of around 2cm (¾ inch) in diameter, cut out the middle of the biscuits, then lay the biscuits on baking sheets and chill for 30 minutes before baking. Meanwhile preheat the oven to 140°C/ 275°F/ GM 1
Bake the biscuits for 25-30 minutes until very lightly golden - you are not looking for these biscuits to brown significantly – they are cooked long and low to get a nice crunch without a suntan
Once baked, allow to cool for a couple of minutes on the baking sheet then transfer to a wire rack to cool completely
Drizzle the melted white chocolate over the cooled biscuits, zig-zagging as you go. Finally, sprinkle the cranberries and nuts over the top. Once set, you may need to carefully poke any chocolate/ cranberries & nuts through the middle to reveal the hole