In a large bowl, beat cream until it begins to thicken. Add sugar and vanilla; beat until stiff peaks form.
In another bowl, beat the cream cheese, confectioners' sugar and Nutella until smooth. Fold in half of the whipped cream. Spoon into crust. Spread remaining whipped cream over top. Garnish with chocolate. Refrigerate for at least 1 hour. Store leftovers in the refrigerator.