1/2 tsp red food coloring (more if you want it darker)
1/2 tsp peppermint extract (more if you really like peppermint!)
~Heat oven to 325. Generously grease and flour 12-cup fluted tube cake pan. Make cake batter as directed on the box. Pour 2 cups cake batter into pan. Into small bowl, pour 3/4 cup batter, stir in food coloring and peppermint extract. Carefully pour pink batter over white batter in pan. Pour remaining white batter over pink batter.
~Bake as directed on box or until toothpick comes out clean. Cool 10 minutes. Turn pan upside-down onto cooling rack, remove pan. Cool completely, about an hour.
~For icing warm 1/2 a tub of vanilla frosting in the microwave and drizzle over cake. Sprinkle crushed candy canes on top.