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Decadent Reese’s Marshmallow Brownies

These decadent Reese’s Marshmallow Brownies have four delicious layers: a fudgy brownie base, a gooey marshmallow layer, sweet Reese’s peanut butter cups, and a crispy peanut butter-chocolate rice cereal topping.

  • Total Time: 2 hours 45 minutes
  • Yield: 16 1x

Ingredients

Scale
  • 1 box brownie mix (for 9x13 pan) plus ingredients called for on box
  • 1 cup marshmallow fluff
  • 1 bag Reese's peanut butter cups, chopped
  • 1 1/3 cup semi-sweet chocolate chips
  • 1 cup creamy peanut butter
  • 3 tablespoons butter
  • 2 cups crispy rice cereal

Instructions

  1. Preheat oven and prepare brownie mix according to package instructions; bake in a 9×13 inch pan and cool completely.
  2. Spread marshmallow fluff evenly over cooled brownies.
  3. Sprinkle chopped Reese's peanut butter cups over the marshmallow layer.
  4. In a microwave-safe bowl, combine chocolate chips, peanut butter, and butter; microwave in 30-second intervals, stirring until smooth.
  5. Stir crispy rice cereal into the melted chocolate mixture until coated.
  6. Drop spoonfuls of the peanut butter-chocolate cereal mixture over the Reese's layer and spread gently to cover evenly.
  7. Refrigerate brownies for at least 2 hours to set the topping.
  8. Cut into squares and serve.

Notes

Using marshmallow fluff instead of marshmallow cream helps avoid baking issues. Refrigerating the brownies after topping ensures the layers set well and makes cutting easier. For best texture, use fresh crispy rice cereal and high-quality peanut butter.

  • Author: Sophie Lane
  • Prep Time: 20 minutes
  • Cook Time: 25 minutes
  • Method: Dessert
  • Cuisine: American

Nutrition

  • Calories: 380
  • Sugar: 30g
  • Sodium: 210mg
  • Fat: 22g
  • Saturated Fat: 8g
  • Unsaturated Fat: 12g
  • Trans Fat: 0g
  • Carbohydrates: 45g
  • Fiber: 2g
  • Protein: 6g
  • Cholesterol: 40mg