Preheat the oven to 350˚F.
In a medium bowl, mix together the cake mix, water, oil, eggs and peppermint extract.
Pour the batter into a lightly greased 9x13 inch baking pan. Bake in the preheated oven for 30 minutes. Allow to cool completely.
Line a baking sheet with parchment paper and set aside.
Using a stand mixer, mix together the cooled cake and frosting until fully combined. Set aside.
Place the white chocolate chips and coconut oil in a microwave safe bowl, and microwave in 30 second intervals, mixing until smooth.
Form the cake into balls using your hands. Dip them in the melted chocolate and place on the prepared baking sheet. Sprinkle with the crushed candy canes.
Place the baking sheet in the fridge (or leave at room temperature) until the chocolate is hardened.