Two-in-One Holiday Cookie Bars

Heat oven to 350°F. Spray 13x9-inch pan with cooking spray.

In medium bowl, mix cookie mix, softened butter and egg with spoon until soft dough forms. Divide dough in half; place one half in another medium bowl.

To one dough, stir in 1/4 cup of the candies and the sprinkles until blended. Press dough into half of the pan; sprinkle remaining candies on top of dough.

In small bowl, mix cocoa and water until well blended. Stir cocoa mixture into remaining dough until blended. Stir in chocolate chunks and 2 tablespoons of the white vanilla baking chips. Spread into remaining half of pan.

Bake 18 to 22 minutes or until toothpick inserted in center comes out clean. Cool 30 minutes.

In small microwavable bowl, microwave remaining 2 tablespoons white vanilla baking chips uncovered on High 30 to 45 seconds or until chips can be stirred smooth. Spoon melted chips into small resealable food-storage plastic bag; partially seal bag. Cut off tiny corner of bag. Squeeze bag to pipe over top of chocolate bar. Cool completely, about 1 hour. Cut into 6 rows by 4 rows. Store covered in airtight container.