For the Chocolate Crumb Crust
Stir together crust ingredients and press onto bottom and 1 inch up side of a buttered 9-inch springform pan. Fill right away or chill up to 2 hours.

For the Filling
Preheat oven to 325 degF.

Begin melting 4oz white chocolate. Using a double boiler or heat safe bowl, melt over simmering water. Stir until fully melted. Using the microwave, in a heat safe bowl microwave for 30 seconds at 50% power until fully melted. Stir well after each interval.

In a large bowl or stand mixer, beat cream cheese until smooth. Add sugar. Mix well. Scrape bowl well prior to each new addition and as needed. Add melted chocolate, flour, whipping cream, salt and peppermint extract. Mix well. On medium/low speed, add one egg at a time. Mix until smooth and blended well.

Add peppermint bark pieces, stir by hand.

Transfer spring-form pan to a larger pan, such as a large roasting pan. Pour filling into crust. Add enough hot water to reach half way up the sides of your spring-form pan. Carefully place in center of oven. Bake at 325 degrees for 1 hour. Turn off the oven. Keeping the door shut, leave the cheesecake in the oven for an additional 45 minutes. Remove and allow to sit for at least 1 hour before chilling.

Chill 4 hours or overnight before adding the mousse.

For the Mousse
In a medium bowl beat softened cream cheese, melted white chocolate, cool whip, sugar and vanilla until smooth and slightly thickened.

Carefully remove side of spring-form pan. Spread mousse mixture evenly over cheesecake. Chill for 4 hours or overnight before serving.

Garnish with crushed candy canes and shaved chocolate.

Store covered in the refrigerator.