01 -
Line a 9x13 inch (23x33 cm) pan with parchment paper, leaving excess on two long sides for later removal. Spray parchment and pan sides with nonstick spray.
02 -
Arrange one layer of club crackers evenly on the parchment-lined pan, cutting as needed to fit snugly, approximately five rows of six crackers.
03 -
In a medium heavy-bottomed saucepan, combine butter, brown sugar, graham cracker crumbs, and heavy cream. Melt over medium heat, stirring constantly. Bring to a boil and maintain for 7 minutes, stirring continuously.
04 -
Pour half of the hot caramel over the first cracker layer, spreading evenly to the edges. Quickly layer a second set of crackers atop the caramel. Pour remaining caramel over the second layer, then top with the final cracker layer.
05 -
Refrigerate the pan to set the caramel layers while preparing the chocolate topping.
06 -
Combine milk chocolate chips, butterscotch chips, and peanut butter in a microwave-safe bowl. Heat for 30-45 seconds, stir, then continue microwaving in 15-second intervals, stirring until smooth.
07 -
Pour the chocolate mixture over the top cracker layer, spreading evenly to edges. Sprinkle approximately 1 teaspoon Maldon sea salt over the surface.
08 -
Refrigerate bars for 1-2 hours to fully set. Use parchment paper edges to lift from pan before cutting into individual bars with a sharp knife.