Spread about ¼ cup frosting on 4 whole (double squares) graham crackers. Top with remaining 4 crackers. You can add sprinkles to the edges if desired.
Eat them right away, or store them in an airtight container for a few hours to soften, and store up to 3 days.
Notes
These cookies were a classic after-school treat when I was young. Mom would also make them whenever we had leftover frosting from making cake or cupcakes.