Ultimate Reeses Brownies

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The ULTIMATE Reeses Brownies that are incredibly simple to make. They’re topped with the most delicious peanut butter ganache. These are sure to be a show-stopper!


  • 1 box brownie mix + ingredients listed on the box
  • 2 Reeses Giant Peanut Butter Bars (you can also sub peanut butter cups or leave them out entirely)
  • 1 c Reeses peanut butter baking chips
  • 1/4 c heavy cream
  • Reeses Pieces for sprinkles on top
  • You’ll have extra chocolate bar blocks left over, those can be chopped for the topping as well OR use chopped Reeses peanut butter cups


  1. Preheat oven to 350 degrees (or as directed on the package).
  2. Line an 8″ square pan with parchment and spray with baking spray.
  3. Make brownies according to the package. Pour half of the batter at the bottom of the pan. Place blocks of the chocolate bars over the batter, and then top with the additional batter. 
  4. Bake according to the package and let cool on a wire rack.
  5. Meanwhile, microwave the peanut butter chips and heavy cream for 30 seconds. Stir lightly then heat for an additional 30 seconds. Whisk until smooth. 
  6. Pour the ganache over the brownies. (It’s okay if the brownies are still a little warm.)
  7. Spread the ganache evenly and then top with Reeses pieces and chopped chocolate bars or peanut butter cups.
  8. Refrigerate until set. Serve at room temperature.