Using an electric mixer, beat cream, icing sugar and vanilla until stiff peaks form.

Finely chop 1 honeycomb bar. Fold through half of the cream mixture. Sandwich cookies together with honeycomb mixture. Place on a plate to form 2 logs, side by side. Spread remaining cream mixture over top and sides of logs. Cover and refrigerate overnight.

Chop remaining honeycomb bar. Top cake with chopped honeycomb and chocolate curls just before serving. Slice cake on an angle to create a striped effect.