Whip cream until stiff (add liqueur if desired). Place Heath bars in a plastic bag and ... of the crushed candy bars into the whipped cream. ... of the sponge cake with the whipped cream mixture ... 4 hours before serving.
Prepare chocolate cake according to package directions in ... directions. Lay out candy bars on counter top and crush ... of the crushed Heath bars over pudding. Spread about ... with remaining candy bars.