Put the butter into a 9X13 inch pan (I used 8X8) and place pan in the oven. Preheat oven to 350 degrees. The butter will melt as the oven preheats.
Remove the pan from oven and sprinkle the graham cracker crumbs over the melted butter. Press into pan. Pour the sweetened condensed milk evenly over the crumbs. Sprinkle the chocolate chips, butterscotch chips, and coconut on top. Press down lightly with a spatula.
Bake for 20 minutes or until golden brown. Cool about 1 hr (although they are damn good warm with a spoon!), then cut into bars.