1/2 c. butter
1 pkg. chocolate cake mix
1 c. semi-sweet chocolate chips
1 c. peanut butter chips
1 c. shredded coconut
1 c. chopped walnuts
1 can sweetened condensed milk

Heat oven to 325 degrees. Grease jelly roll pan, 15 1/2 x 10 1/2 x 1 inch. Cut butter into cake mix with pastry blender to form coarse crumbs. Sprinkle evenly into prepared pan. Sprinkle with chocolate chips, peanut butter chips, coconut, and nuts. Drizzle sweetened condensed milk evenly over all. Bake 30-35 minutes or until slightly bubbly and very lightly browned. Cool completely. Cut into bars.