01 -
Preheat oven to 350°F (177°C).
02 -
Lightly grease a 13x9 inch baking pan with nonstick cooking spray.
03 -
In a bowl, combine graham cracker crumbs and melted butter until evenly moistened. Press the mixture firmly into the bottom of the prepared pan to form a compact crust.
04 -
Pour sweetened condensed milk evenly over the graham cracker crust. Sprinkle chocolate chips, butterscotch chips, coconut flakes, M&M's, and chopped nuts over the surface in even layers.
05 -
Bake in preheated oven for 30 to 45 minutes until the edges are golden and the center is set.
06 -
Allow the bars to cool completely in the pan before slicing into bars and serving.