1. Preheat the oven to 350 degrees. 2. Stir together the butter and graham cracker crumbs. 3. Press the mixture into the bottom of the pan. 4. Top the rust with sweetened condensed milk. 5. Sprinkle the chocolate chips, pecans, and coconut flakes over the milk. 6. Bake in the preheated oven for 25 minutes, then remove from oven and allow to cool before slicing.