HEAT oven to 350°F.
MIX brownie mix, applesauce, 2 egg whites and water until well blended. Pour into 13x9-inch pan sprayed with cooking spray.
BEAT cream cheese spread, sugar, flour and remaining egg white with mixer until well blended; spoon over brownie batter. Swirl gently with knife.
BAKE 28 to 30 min. or until toothpick inserted in centre comes out with fudgy crumbs. (Do not overbake.) Cool completely.
serving size = 1 brownie (63 g)