German Chocolate Bars

1 box German Chocolate cake mix
2/3 cup cold butter, cubed
1 cup semisweet chocolate chips
1 can coconut-pecan frosting
1/2 cup milk

Place cake mix in a large bowl.  Cut in butter until crumbly.  Press 2-1/2 cups of this crumb mixture into a greased 13x9 inch pan.  Bake at 350 degrees for 10 minutes.  Immediately sprinkle the crust with chocolate chips.  Drop frosting by tablespoonfuls over the chocolate chips.  Smooth lightly with a fork. 

Stir milk into remaining crumb mixture.  Drop by teaspoonfuls over top. Bake 25-30 minutes longer or until bubbly around the edges and top is cracked.  Cool on a wire rack.  Refrigerate for 4 hours before cutting.