put butter in 13x9 baking pan and melt in oven. coat bottom and sides of pan with butter
spread cracker crumbs in pan and press to bottom. layer in your chips, one flavor at a time. (although, they kind of mix together anyway) layer in the nuts, then cover with coconut, pour milk evenly over the top.
stick the pan back into the preheated oven for 20-25 minutes. pull it out and let it cool, then put it in the fridge to set, cut to whatever size cookies you like. (i use combination of pizza cutter and butter knife)