1box, (1 lb 6.5 oz Betty Crocker® Original Supreme brownie mix)
Water, vegetable oil and eggs called for on brownie mix box
Filling:
1/2cupbutter, softened
3/4cupcreamy peanut butter
2cupspowdered sugar
2teaspoonsmilk
Topping:
1cupsemisweet chocolate chips
1/4cupbutter
Instructions
Heat oven to 350°F. Grease bottom only of 13×9-inch pan with cooking spray or shortening. (For easier cutting, line pan with foil, then grease foil on bottom only of pan. I do this all the time when I make brownies and bars)
In medium bowl, make brownie mix according to the package directions. Spread in pan. Bake according to package directions. Cool completely, about 1 hour. You can speed this up by cooling in the refrigerator.
In medium bowl, beat filling ingredients with electric mixer on medium speed until smooth. Spread mixture evenly over brownie base.
In small microwavable bowl, microwave topping ingredients uncovered on High 30 to 60 seconds; stir until smooth. Cool 10 minutes; spread over filling. Refrigerate about 30 minutes or until set. For brownies, cut into 9 rows by 4 rows. Store covered in refrigerator. (I take it out or the fridge about 15 minutes before serving. This allows the chocolate on top to soften a little)