1Line a 20 x 20 cm baking pan with baking paper and set aside.
2Add all base ingredients to a food processor. Pulse on high for 30 seconds to 1 minute or until ingredients are broken down into small, coarse pieces. Transfer to baking pan and use a spatula to spread out and press into pan evenly. Set in freezer for 20 minutes.
3For the peppermint layer, place cashews, coconut oil, cacao butter, brown rice syrup and peppermint extract into food processor or high powered blender. Blend for 1 minute or until smooth. Pour into baking pan over the base layer. Smooth over with a spatula and place in freezer for a further 10 minutes.
4In a medium-sized saucepan add the coconut oil, brown rice syrup and cacao powder. Place over a low-medium heat, stirring constantly until melted and combined. Allow to cool for 10 minutes before pouring into the baking pan. Top with crushed candy canes and place into fridge for 1 hour or until firm.
5Lift slice out of pan and place onto chopping board. Using a sharp knife cut into 12 pieces and place on a serving tray. Serve immediately or place back in fridge until ready to serve.