The graham crackers sandwiched between the cake layers will become soft over time. Make this cake a day ahead of time if you prefer a soft texture that slices easily.
Cut cake between the graham crackers that line the edge of the cake. You’ll have 12 perfectly even cake slices.
Have plenty of graham crackers on hand in case some don’t break neatly at the perforations.
Use regular graham crackers in place of the chocolate graham crackers, if desired.