1. Heat oven to 350°F. Grease and flour 13x9x2-inch baking pan. Prepare CREAM CHEESE FILLING; set aside.
2. Stir together flour, sugar, cocoa, baking soda and salt in large bowl. Add water, oil, eggs, vinegar and vanilla; beat on medium speed of mixer 2 minutes or until well blended. Pour 3 cups batter into prepared pan. Gently drop cream cheese filling onto batter by heaping teaspoonfuls. Carefully spoon remaining batter over filling. Combine chocolate chips, coconut and nuts; sprinkle over top of batter.
3 Bake 50 to 55 minutes or until wooden pick inserted into cake center comes out almost clean and cake starts to crack slightly. Cool completely in pan on wire rack. Cover; store leftover cake in refrigerator. 12 to 16 servings.
CREAM CHEESE FILLING
1/2 cup HERSHEY'S SPECIAL DARK Chocolate Chips
1 package (8 oz.) cream cheese, softened
1/3 cup sugar
1/2 teaspoon vanilla extract
1. Place chocolate chips in small microwave-safe bowl. Microwave at MEDIUM (50%) 30 seconds; stir. If necessary, microwave an additional 10 seconds at a time, stirring after each heating, until chips are melted and smooth when stirred.
2. Beat cream cheese and sugar in medium bowl until well blended. Beat in egg and vanilla. Add melted chocolate, beating until well blended.