1 box (1 lb 6.5 oz) Betty Crocker Original Supreme brownie mix
Water, vegetable oil and eggs called for on brownie mix box
1/2 cup butter, softened
1/2 cup creamy peanut butter
2 cups powdered sugar
2 tsp milk
1 cup semisweet chocolate chips
1/4 cup butter
Heat oven to 350 degrees. Grease bottom only of 9x13 pan.
In medium bowl, stir brownie mix, pouch of chocolate syrup, water, oil and eggs until well blended. Spread in pan. Bake 28-30 minutes or until toothpick inserted 2 inches from side of pan comes out almost clean. Cool completely, about 1 hour.
In medium bowl, beat filling ingredients with electric mixer on medium speed until smooth. Spread mixture evenly over brownie base. (I found that using my fingers worked better than a spoon).
In small bowl, microwave topping ingredients uncovered on High 30-60 seconds; stir until smooth. Cool 10 minutes; spread over filling. Refrigerate about 30 minutes or until set. Cut small as these are very rich...9 rows by 4 rows. Store covered in refrigerator.