HEAT oven to 350 degrees F. Coat a 13 x 9-inch baking pan with no-stick cooking spray.
PREPARE brownie mix according to package directions. Stir in nuts. Spread into prepared pan.
BEAT cream cheese until fluffy in large bowl. Gradually beat in sweetened condensed milk, egg and vanilla until smooth. Pour evenly over brownie batter.
BAKE 40 minutes or until top is lightly browned. Cool 1 hour. Chill. Garnish with chocolate syrup. Cut into bars.