Preheat the oven to 350°F. Line a 13x9-inch baking pan with parchment paper so that it hangs over on the two longer sides.
In a medium bowl, stir together the crushed graham crackers and melted butter until well-combined. Add the mixture to the bottom of the baking pan, pressing it into an even layer.
Transfer the sweetened condensed milk to a microwave-safe bowl or liquid measuring cup. Microwave it for 15 seconds then pour it atop the graham cracker crust, spreading it into an even layer.
Sprinkle the coconut, chocolate chips, butterscotch cups and pecans in an even layer on top of the sweetened condensed milk.
Bake the bars until they are pale golden on top, about 25 minutes, then remove them from the oven and let them cool completely in the pan.
Using the parchment paper overhangs, transfer the bars onto a cutting board then slice and serve.