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Peanut Butter Blondie for peanut butter lovers //

Peanut Butter Blondies

  • Author: Elana Lepkowski
  • Yield: 4 Oversized Peanut Butter Blondies 1x


Calling all peanut butter lovers! This oversized peanut butter blondie is chock full of creamy peanut butter and studded with a generous portion of peanut butter and chocolate candies. A Disneyland-inspired treat.



Blondie Base:

  • 1 stick butter (1/2 cup)
  • 1/2 cup creamy peanut butter
  • 3/4 cup brown sugar light or dark (1 cup if you like your brownies sweeter)
  • 1 egg
  • 1/2 teaspoon kosher salt
  • 1 teaspoon vanilla extract
  • 1/2 teaspoon baking powder
  • 1 cup flour
  • 1/2 cup Reese’s Pieces

Peanut Butter Frosting:

  • 1 cup creamy peanut butter
  • 3 tablespoons unsalted butter
  • ½ cup powdered sugar (depending on how runny your peanut butter is you may need more or less powdered sugar)
  • 1 teaspoon vanilla extract


  • Reese’s Pieces candies
  • Mini Peanut Butter Cups

Specialty Tools


For the blondie base:

  1. Preheat the oven to 350°f.
  2. Melt the butter in a small saucepan, or in the microwave.
  3. In a large mixing bowl, combine the melted butter, peanut butter, and brown sugar. Whisk until smooth.
  4. Mix in the egg, salt and vanilla extract until smooth.
  5. Sprinkle baking powder over the mixture, stir in, and then add in the flour and stir until just combined.
  6. Fold in the Reese’s Pieces candies.
  7. Pour the mixture into 4 of the baking cups (the mixture will be on the stiff side), and smooth the tops.
  8. Bake for 22-26 minutes
  9. When done, let fully cool before frosting.
    Peanut Butter Blondie for peanut butter lovers //

For the peanut butter frosting:

  1. In a mixing bowl, beat together the peanut butter and butter until smooth.
  2. Mix in the powdered sugar and vanilla extract until fully combined and smooth.
  3. Spread on top of the blondie bases.
  4. Any leftover frosting can be kept refrigerated in an air-tight container for up to 4 days.


  1. After spreading peanut butter frosting on blondies, top with Reese’s Pieces candies and mini peanut butter cups.
  2. Enjoy!


  • You can also bake this in an 8×8″ baking pan lined with parchment.
  • If your powdered sugar is lumpy, sift before mixing in to the frosting.
  • Extra frosting can be refrigerated up to 4 days in an air-tight container, or frozen up to 3 months. Re-whip once defrosted.

Keywords: treat, peanut butter, blondies, GCH, Disneyland, Reese's Pieces, peanut butter cups, fall

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