Continue beating until a smooth batter forms. Pour batter into prepared baking pan. In a small bowl, combine the chocolate chips and walnuts. Fold in the coconut. Sprinkle reserved crumb mixture over the top of batter in pan.
Sprinkle withe the chocolate chips and walnuts.
Using a long flat spatula, spread topping evenly over the top of the batter in pan. Bake bars for 35 minutes, or until a skewer inserted in center comes out clean. Let bars cool all the way before cutting.