Melt the butter.
Combine graham cracker crumbs and sugar in large bowl.
Stir melted butter into graham cracker crumbs.
Press mixture very firmly into a 13 x 9 inch pan that has been lined with foil and greased.
Evenly pour 1 can of sweetened condensed milk on top of prepared crust.
Evenly spread the coconut on top of the milk layer.
Sprinkle chocolate chips and butterscotch chips on top of this.
Pour remaining can of sweetened condensed milk over the chips.
Press down firmly on magic bars.
Bake at 350 degrees for 35-40 minutes or until the crust is browning around the edges.
See tips below for cutting.