Preheat oven to 350º.
Line 8 x 8 baking pan with non-stick foil.
Mix together graham cracker crumbs, melted butter and brown sugar.
Pat into bottom of prepared pan.
Layer the chocolate discs, pecans and most of the coconut over the crust. Reserve a little for the top.
Pour the sweetened condensed milk over the top followed by the rest of the coconut.
Bake for 30-35 minutes or till coconut is lightly browned.
Cool completely before cutting into bars. Keep in fridge.