----------------------------------GARNISH---------------------------------x Whipped cream x Chocolate shavings or curls TO MAKE CRUST: Process chocolate wafers in blender or food processor to make 1.5 cups fine crumbs (or place wafers in plastic bag and crush with rolling pin). Combine crumbs with butter and vanilla; stir until blended. Press mixture onto bottom and up sides of 23 cm tart or pie pan. Bake at 190ºC . for 10 minutes. Cool on wire rack. TO MAKE FILLING: Microwave chocolate morsels and half cup whipping cream in microwavable bowl on HIGH (100%) for 1 to 2 minutes, stirring every 30 seconds [Iris' note: IMPT TO DO !!], until melted and smooth. Remove from heat; stir in vanilla. Cool to room temperature. With electric mixer, beat remaining whipping cream on high speed, gradually adding sugar, until soft peaks form. Stir one third whipped cream into chocolate mixture. With rubber spatula, gently fold remaining whipped cream into chocolate mixture. Turn mixture into crust. Chill 3 hours or until set. Garnish with whipped cream and chocolate shavings, if desired.