1Heat oven to 350°F. Spray bottom of 13x9-inch pan with cooking spray.
2In large bowl, stir all Bar ingredients until soft dough forms. Press into pan; bake 15 minutes. Cool about 10 minutes.
3In large bowl, stir all Frosting ingredients until smooth. Spread over bars.
4In small microwavable bowl, microwave all Glaze ingredients on High 30 seconds; stir until smooth. Drizzle over frosting. Refrigerate 30 minutes or until set. For bars, cut into 9 rows by 4 rows. Store covered in refrigerator.