Combine crumbs and melted butter for crust. Press firmly into bottom of a 9inch springform pan.

In a medium bowl, combine chocolate and 1/2 cup heavy cream. Melt in microwave in 20-30 seconds intervals stirring well each time. Set aside to cool slightly.

In a large bowl, beat cream cheese until smooth. Add confectioners sugar, peanut butter and vanilla, beat on high speed 2 -3 minutes until smooth and fluffy. Add chocolate mixture and beat until combined.

In a separate bowl beat remaining cream until stiff peaks form then fold into the cream cheese mixture with a spatula or beat on low speed.

Add garnish if desired and serve. Store in refrigerator.