baking powder and salt. Stir in milk, butter and vanilla; beat until smooth. Pour batter into ungreased 8-or 23 cm square baking pan. Stir together remaining half cup granulated sugar, brown sugar and remaining 4 tablespoons cocoa; sprinkle mixture evenly over batter. Pour hot water over top; do not stir. Bake 35 to 40 minutes or until center is almost set. Let stand 15 minutes; spoon into dessert dishes, spooning sauce from bottom of pan over top. Garnish with whipped topping, if desired. About 8 servings. JMHershey's is a registered trademark of Hershey Foods Corporation. Recipe may be reprinted courtesy of the Hershey Kitchens. ----