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Reese’s marshmallow brownies with gooey chocolate and peanut butter layers
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Reese’s Marshmallow Brownies

These Reese’s Marshmallow Brownies are rich, gooey, and layered with a fudgy brownie base, soft marshmallow fluff, chocolate peanut butter cups, and a crunchy chocolate topping. A perfect indulgent dessert for chocolate and peanut butter lovers.
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Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Servings: 36 Bars
Course: Dessert
Cuisine: American
Ingredients Method Notes

Ingredients
  

  • 18 ounces brownie mix plus ingredients listed on the box
  • 7 ounces marshmallow creme or fluff
  • 25 Reese’s miniatures halved
  • 12 ounces semi-sweet chocolate chips
  • 1 cup creamy peanut butter not natural
  • 3 cups crispy rice cereal

Method
 

  1. Prepare brownie mix according to package directions in a 9×13 baking dish. Cool completely, then refrigerate for at least 1 hour.
  2. Spread marshmallow fluff evenly over chilled brownies. Return to fridge for 30 minutes.
  3. Arrange halved Reese’s miniatures over the marshmallow layer.
  4. Melt chocolate chips and peanut butter in a microwave-safe bowl in 30-second intervals, stirring until smooth.
  5. Stir in crispy rice cereal until fully coated.
  6. Spread the mixture over the Reese’s layer evenly.
  7. Refrigerate for about 1 hour until fully set.
  8. Let sit at room temperature for a few minutes, then cut into bars and serve.

Notes

  • Make sure the brownie layer is fully cooled and chilled before adding the marshmallow. This keeps the layers neat and prevents melting.
  • Marshmallow fluff can be sticky, so spread it slowly using a spatula. Lightly greasing the spatula can make this step easier.
  • When placing Reese’s on top, spread them evenly so every piece gets a good balance of chocolate and peanut butter.
  • Melt the chocolate and peanut butter in short intervals and stir in between to avoid burning and keep the mixture smooth.
  • Gently fold in the cereal so it stays light and crunchy instead of getting crushed.
  • Let each layer set properly in the fridge before moving to the next step. This helps create clean, defined layers.
  • Before slicing, let the brownies sit at room temperature for a few minutes for smoother, cleaner cuts.