To make this a truly quick treat, have graham cracker crumbs on hand by blending up graham crackers in a food processor, or using the good old-fashioned Ziploc bag and rolling pin method. I always process a good amount of graham cracker crumbs in advance and have them stored in my pantry for quick access.
Change it Up:
Do reverse colors by changing the base to chocolate and the embellishment to butterscotch.
Dress it Up:
Add a butterscotch layer AND a chocolate layer - slightly set the first layer before adding the additional layer. You can still add the swirl if desired!