In a large bag or bowl, add white sugar and cinnamon, mix together. Toss a few biscuits and shake or stir to coat. Tap off excess sugar. Line biscuits evenly to coat bottom of bundt pan, repeat the process until half of the biscuits have been coated and added into the bundt pan
. Toss in the walnuts. Continue process with biscuits, layering over the walnuts until all biscuits have been added.