Preheat the oven to 350 degrees. Prepare a 13x9x2 inch rectangular pan with non-stick cooking spray.
In a large mixing bowl combine butter and sugar. Mix on medium speed until smooth and creamy.
Mix in eggs, one at a time, and then Hershey's Syrup. Mix until smooth.
Mix in flour until smooth. Pour into prepared pan and bake for 25 to 30 minutes. The brownies will look wet on top but test for doneness by lightly touching center. If it springs back it is done.
Cool completely in pan.
To Make the Mint Cream Center
In a small bowl combine all ingredients; beat until smooth.
Spread on cooled brownie layer. Cover and chill.
To Make the Chocolate Glaze
In a small saucepan, over low heat, melt butter and chocolate chips. Mix with a whisk until smooth. Remove from heat and let cool slightly. Pour over Mint Cream Layer.