PREHEAT oven to 350°F. Mix brownie mix, applesauce, one of the egg whites and water. Pour into 8-inch square baking pan sprayed with cooking spray.
MIX cream cheese spread, sugar, flour and remaining egg white until well blended. Spoon over brownie batter. Cut through batter with knife several times for marble effect.
BAKE 28 min. or until wooden toothpick inserted in centre comes out with fudgy crumbs attached. (Do not overbake). Cool in pan on wire rack. Cut into 16 (2x2-inch) pieces.