Create a decadent peanut butter frosting, then drizzle our Duncan Hines Chocolate Decadence Brownies with a warm milk chocolate sauce. These Peanut Butter Brownie Squares are a winning combination.
- Preheat oven to 350 °F. Spray only the bottom of 13x9-inch pan with nonstick cooking spray.
- Prepare and bake brownies according to package directions for cake-like brownies. Cool 5 to 10 minutes.
- For frosting, combine confectioners' sugar, peanut butter, milk and butter in small bowl. Beat at medium speed with electric mixer until blended. Spread over warm brownies.
- For drizzle, place chocolate chips and shortening in microwave-safe bowl. Microwave on high power for 1 minute or until melted. Drizzle over frosting. Allow chocolate drizzle to set before cutting into bars.