Preheat oven to 350° F. Prepare a 9x13 inch pan by lining with parchment paper or spraying with cooking spray.
In a mixing bowl, combine the graham cracker crumbs and melted butter. Stir until combined and gently press into the bottom of the prepared baking pan.
Evenly drizzle about half the can of sweetened condensed milk over the crust.
Sprinkle the 1 cup of the chocolate chips, ½ cup of the pecans, ¼ cup butterscotch chips, and all of the coconut over the sweetened condensed milk layer. Then add the remaining ½ cup chocolate chips, ¼ cup butterscotch chips, and ½ cup pecans. Pour the remaining sweetened condensed milk evenly over all ingredients.
Bake in preheated oven for approximately 25-30 minutes until the coconut is a light golden brown and the middle is set. Let cool before cutting into bars.