PREHEAT oven to 350° F. Line bottom of 13 x 9-inch baking pan with wax paper or parchment paper. Grease paper and sides of pan. Sprinkle morsels, nuts and coconut evenly on bottom of pan.
PREPARE cake mix according to package directions. Carefully spoon batter over ingredients in prepared pan.
HEAT cream cheese and butter in medium saucepan over medium-low heat until melted (mixture may not appear smooth). Stir in powdered sugar until smooth. Drizzle mixture over cake batter.
BAKE for 45 to 55 minutes or until wooden pick inserted in center of chocolate portion comes out clean. Cool in pan on wire rack for 15 minutes. Invert onto wire rack. Carefully remove paper. Cool completely. Carefully transfer to serving platter.
* Nutritional analysis based on ingredients for standard chocolate cake mix: 3 eggs, 1/2 cup vegetable oil and 1 1/3 cups water. If different, make recipe according to ingredients stated on cake mix box.