Buckeye Brownies

1 store bought fudge brownie mix , prepared as directed for 9x9 pan, baked & cooled
2 c. powdered sugar
1 c. creamy peanut butter
1 stick butter, room temperature
2 T. milk
1 t. vanilla

Peanut Butter Glaze:
1 c. semi sweet chocolate chips
1/2 c. creamy peanut butter
1 t. oil

In a large bowl, cream together on medium speed,  1 c. peanut butter & butter until light in color and fluffy. (About 3-4 minutes) Reduce speed to low and alternate adding in powdered sugar and milk, beginning and ending with powdered sugar. Mix in vanilla and beat until desired consistency is reached. (A splash more of milk may be added if the mixture is too dry) Evenly spread over cooled brownies and set aside. Place peanut butter, chocolate chips and oil in microwaveable bowl and heat on high at 20 second intervals. Stir in between until mixture is completely melted and smooth. Pour over brownies and let set. Cut into squares. Serve chilled or at room temperature. Enjoy with a glass of cold milk! YUM!