The sweetness from the mint chocolate candy bars in these Easy Mint Brownies is nicely contrasted with the hint of bitterness provided by chopped walnuts.
- Preheat oven to 350 ºF. Grease bottom of 13x9-inch pan.
- Prepare and bake brownies according to package directions for chewy brownies. Place candy bars immediately on hot brownies. Cover pan with aluminum foil for 3 to 5 minutes or until chocolate is shiny and soft. Spread gently to cover surface of brownies. Sprinkle with chopped walnuts, if desired. Allow chocolate to set before cutting into bars.