Preheat oven to 400 degrees F.
Prepare a bundt pan with nonstick cooking spray. Use a heavy hand and make sure everything is coated.
Sprinkle walnuts on the bottom of the pan (this will be the top once cooked).
Melt butter in the mirowave then remove and stir in maple syrup. Drizzle this over nuts in prepared pan.
Add granulated sugar and ground cinnamon to a large plastic baggy. Cut or tear biscuits into 4ths and place them into the bag. Shake and coat all biscuit pieces with cinnamon sugar. Set aside.
Place butter and brown sugar into a small sauce pan. Over medium heat bring to a boil then immediately remove from heat.
Add a layer of coated biscuits to your bundt pan and spoon in some of your butter and brown sugar sauce. Sprinkling in walnuts in between. Keep doing this until your pan and full and then add all remaining sauce to the top.
Bake for 30-40 minutes or until cooked through and golden brown. Allow resting in the pan for several minutes before removing it.
To remove place a plate on the top of your pan then flip outside down. Allow to sit for several minutes then slowly lift pan while monkey bread stays on plate.