In one 20x30cm baking dish, melt the butter. Sprinkle the crumbs over the melted butter. Top with the coconut then the sweetened condensed milk and bake for 25 minutes or until golden brown.
In a saucepan over low heat melt the chocolate chips and peanut butter together. Stir until creamy and pour over the baked bars. Let cool thoroughly then cut into bars. Garnish with more coconut. Store bars in an airtight container.