Reese’s Pieces Peanut Butter Blondies

peanut butter blondies with Reese's Pieces

Calling all peanut butter lovers! These delicious blondies are LOADED with peanut butter butter flavor and studded with sweet Reeseโ€™s Piecesโ€”one of my absolute favorite candies. The Reeseโ€™s Pieces add a nice crunch to these soft and chewy blondies. I love a good texture contrast in my baked goodsโ€”especially one from Reeseโ€™s Pieces.

I hope you enjoy these. If you love my peanut butter cookies, I’m confident you’ll feel the same here. Theyโ€™ve become a staple in my kitchen!

Print
clock clock iconcutlery cutlery iconflag flag iconfolder folder iconinstagram instagram iconpinterest pinterest iconfacebook facebook iconprint print iconsquares squares iconheart heart iconheart solid heart solid icon
peanut butter blondies with Reese's Pieces

Reese’s Pieces Peanut Butter Blondies

5 from 4 reviews
  • Author: Sally
  • Prep Time: 10 minutes
  • Cook Time: 30 minutes
  • Total Time: 1 hour
  • Yield: 16 blondies
  • Category: Bars
  • Method: Baking
  • Cuisine: American
Save Recipe

Description

Soft and chewy peanut butter blondies studded with Reese’s Pieces!


Ingredients

  • 2 and 1/2 cups all-purpose flourย (spooned & leveled)
  • 1 teaspoon baking powder
  • 1/4 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1/2 cup (8 Tbsp; 113g) unsalted butter
  • 2 cups packed light or dark brown sugar
  • 1/2 cup creamy peanut butter
  • 2 large eggs, at room temperature
  • 1 teaspoon pure vanilla extract
  • 3/4 cup Reese’s Pieces


Instructions

  1. Preheat oven to 350ยฐF (177ยฐC). Grease 11×7-inch pan and set aside.
  2. In a saucepan over medium heat, melt the butter and brown sugar, stirring until smooth. Remove from heat, and stir in the peanut butter. Set mixture aside to cool.
  3. In a large bowl, whisk together flour, baking powder, baking soda, and salt.
  4. Add eggs, one at a time, to the peanut butter mixture, mixing well after each egg. Stir in pure vanilla extract. Add this mixture to the prepared dry ingredients, and stir until batter is smooth. Fold in 1/2 cup of Reese’s Pieces, leaving 1/4 cup to sprinkle on top.
  5. Pour batter into the greased pan, spreading batter evenly. Sprinkle with remaining 1/4 cup Reese’s Pieces.
  6. Bake for 25-30 minutes or until top is golden brown and edges are lightly browned. Allow 20 minutes to cool and cut into squares.ย Cover and store leftover blondies at room temperature or in the refrigerator for up to 1 week.

Notes

  1. Freezing Instructions: Blondies freeze well up to 3 months. Thaw overnight in the refrigerator then bring to room temperature before serving.
  2. Special Tools (affiliate links): 11×7-inch Baking Pan | Glass Mixing Bowls | Whisk | Silicone Spatula
sally mckenney headshot purple shirt.
About the Author

Sally McKenney

Sally McKenney is a baker, food photographer, and New York Times best-selling author. Her kitchen-tested recipes and step-by-step tutorials have given millions of readers the knowledge and confidence to bake from scratch. Sallyโ€™s work has been featured on TODAY, Good Morning America, Taste of Home, People, and more.

Read More

Reader Comments and Reviews

  1. C. Britt says:
    May 21, 2024

    It was so easy to make and so tasty it barely lasted 12 hours.


  2. Tiff says:
    August 12, 2023

    Came out amazing

  3. Julie says:
    August 11, 2022

    If I wanted to punch up the chocolate (namely dark chocolate) flavor, would you recommend (1) adding dark chocolate chips and cutting down the amount of Reese’s Pieces (if so what ratio do you suggest), (2) add dark chocolate chips and keep the amount of Reese’s Pieces the same, or (3) make them as is, and add a chocolate ganache (I’d guess you’d do this by dipping pre-cut and cooled bars)

    1. Trina @ Sally's Baking says:
      August 11, 2022

      Hi Julie! We would try reducing the amount of Reese’s Pieces and adding dark chocolate chips – let us know how they go!

  4. Lari says:
    May 11, 2020

    I made this recipe because I thought it’d be fun to make Sally’s first recipe post. These were easy and very tasty! Highly recommend!

  5. Sharon says:
    February 29, 2020

    Hi Sally, My 31 year old niece messaged your Instagram to me In November and Iโ€™ve been a loyal follower ever since. I threw out all my old Christmas cookie recipes and used your versions of a few and tried a few new recipes. Each and every one was a hit!!! I didnโ€™t waste anytime ordering your baking cookbook and cookie cookbook. You are now my sole source for baked goods. Thank you so much for all of your hard work and dedication. I made these Reeseโ€™s bars for an Oscar party and they disappeared before some people could grab a second bar. I am making them for the same crowd today per their request. I just canโ€™t thank you enough for all the wonderful recipes. And congratulations are your pregnancy!

    1. Sally @ Sally's Baking says:
      March 2, 2020

      Hi Sharon, Thank you so much for your sweet note! I’m so happy that you have been finding success with so many of my recipes. This post is so special to me as it was my VERY FIRST blog post ever!! I updated the post/recipe in 2016 and I think you might like this updated Peanut Butter Blondies recipe even better ๐Ÿ™‚

  6. Joanne |No Plate Like home says:
    February 26, 2017

    I started my food blog 5 months ago. It helps looking at successful bloggers’ first posts to see how far they’ve come for inspiration and to know that no one started at he same point they grown into now.ย 
    I can tell you work very hard and deserve your success! Thanks for sharing your first post. Mine is embarrassing. One day I’ll photograph it again but keep the old pic just to show my readers how far I’ve come.

    Continued good luck to you Sally!

    1. Sally @ Sally's Baking says:
      February 27, 2017

      Thanks so much Joanne! I really appreciate this comment. Best of luck on this new adventure!

  7. Skye says:
    December 19, 2014

    Omgossssshh I found your first post! Of course it was peanut butter- what else could it be?!? You’ve come so far now and yet still peanut butter is blinging out in your recipes! (not that I’m complaining.) I feel we might need a new blog name soon…

  8. Meggi @ meggi's mixing bowl says:
    August 20, 2014

    Sally, I have never commented on your blog before, though I am an avid reader. I just wanted to let you know that you inspire me so much. I am a teenager trying to have a nice, popular blog like yours, and seeing your first post gave me hope that maybe, someday I can have a popular blog like yours with 50+ comments on each post. Thanks for being a hugeeee inspiration for bloggers everywhere!

    1. Sally @ Sally's Baking says:
      August 20, 2014

      Thank you Meggi. You are the sweetest. Best of luck. Work hard!

      1. Meggi says:
        August 22, 2014

        I’m literally crying because you replied! It means a lot to me. Thanks so much!

  9. Lisa says:
    January 19, 2014

    These are in the oven right now! I’m so excited!!

    1. Sally @ Sally's Baking says:
      January 20, 2014

      Enjoy, Lisa!

  10. Candice says:
    January 6, 2014

    Great! Thanks!

  11. shana says:
    December 12, 2013

    I just made these for the first time. The batter was delicious. They are now in the oven. I’m excited to taste them ๐Ÿ™‚

    1. Sally @ Sally's Baking says:
      December 13, 2013

      Hey Shana! I hope you enjoy. ๐Ÿ™‚

  12. Elizabeth says:
    July 15, 2022

    Why does the smaller recipe use baking soda, but the 9×13 recipe doesnt?