The Ultimate Chewy Reese’s Peanut Butter Blondies Recipe
Prepare to experience pure dessert bliss with these extraordinary Reese’s Peanut Butter Blondies. This isn’t just another blondie recipe; it’s a meticulously perfected creation, promising a delightfully chewy texture with every bite. Our signature blondie base is generously loaded with mini Reese’s peanut butter cups, creamy Reese’s chips, and rich milk chocolate chips, ensuring an explosion of flavor and texture. But the indulgence doesn’t stop there – each blondie is lavishly topped with a luscious, velvety smooth Reese’s peanut butter icing, making this an unforgettable treat for any peanut butter and chocolate enthusiast. If you’re searching for the perfect homemade dessert bar that combines ease of preparation with unparalleled taste, look no further!

Recipe at a Glance
A brief overview of this irresistible dessert. For detailed instructions and ingredients, scroll down to the full recipe card.
Jump to Recipe
Prep Time
20 minutes
Cook Time
20-25 minutes
Total Time
40-45 minutes
Servings
32 generous portions
Difficulty
Effortlessly Easy
Calories *
267 kcal per serving (estimated)
Technique
Classic brown butter blondie base, oven-baked, chilled, then topped with a creamy homemade peanut butter icing. Sliced and served.
Flavor Profile
A harmonious blend of nutty brown butter, rich Reese’s peanut butter, sweet milk chocolate, all culminating in a deeply satisfying and chewy blondie with a sensational frosting.
* Based on estimated nutritional panel. Individual results may vary.
That peanut butter frosting top is all I want on every bar. Blondies, brownies, and cookie cakes alike will have a peanut butter frosting top for the foreseeable future in my house! ⭐⭐⭐⭐⭐
Mara, Enthusiastic Home Baker
Why These Reese’s Peanut Butter Blondies Will Be Your New Favorite
Get ready to brace yourselves! These Reese’s Peanut Butter Blondies are not just “good”; they are, in a word, insanely delicious. What makes them so irresistible? It all starts with our secret weapon: an easy-to-master brown butter blondie recipe. Browning the butter isn’t just a step; it’s a flavor enhancer that adds an incredible depth and nutty complexity, transforming a simple blondie into something truly gourmet.
Into this rich, golden batter, we lovingly fold a medley of indulgent treats: delightful mini Reese’s peanut butter cups, creamy Reese’s peanut butter chips, and luxurious Ghirardelli milk chocolate chips. This triple threat ensures that every single square is bursting with that iconic peanut butter and chocolate pairing. And because no Reese’s dessert is complete without extra peanut butter goodness, we crown each blondie with a thick, dreamy layer of homemade Reese’s peanut butter icing. The result is a bar cookie that’s chewy, rich, perfectly sweet, and utterly addictive—a true showstopper for any occasion.

The Perfect Harmony: A Reese’s Peanut Butter & Chocolate Trifecta
This recipe truly delivers a Reese’s peanut butter trifecta! The rich, nutty notes of the brown butter blondie perfectly complement and enhance the sweet and savory combination of peanut butter and milk chocolate. It’s a symphony of flavors that creates a balanced and incredibly satisfying taste experience.
Beyond the exquisite taste, the texture of these blondies is pure perfection. They bake up with a delicate, slightly crisp exterior around the edges, yielding to an interior that is wonderfully chewy and dense. With mini Reese’s cups and both peanut butter and milk chocolate chips generously distributed throughout the batter, you’re guaranteed a burst of chocolatey, peanut buttery goodness in every single bite. This combination of textures – from the slight crunch to the ultimate chewiness – makes these blondies truly irresistible and memorable.

Spotlight On: The Sensational Reese’s Peanut Butter Icing
While the blondie itself is a masterpiece, the Reese’s peanut butter icing truly deserves its own moment in the spotlight. This frosting is nothing short of sensational – a key component that elevates these blondies to an entirely new level of decadence. It’s exquisitely silky smooth and wonderfully creamy, with a rich, profound peanut butter flavor that will captivate your senses.
That’s right, I said it: this icing tastes just like the creamy, melt-in-your-mouth filling of a classic Reese’s cup, but dare I suggest, even better. Its luxurious texture and intense peanut butter essence create a perfect harmony with the chewy blondie base, ensuring a dessert that is not just eaten, but truly savored. This icing is the crowning glory, bringing all the elements together for an unparalleled peanut butter and chocolate experience.

Baking Perfection: The Importance of Your Baking Dish
Choosing the right baking pan can significantly influence the final texture of your blondies. I typically opt to bake my blondies (and brownies!) in a glass or Pyrex baking dish. My experience has shown that when these bars are baked in a metal pan, the outer edges tend to cook much faster, sometimes resulting in an overly crunchy perimeter by the time the center is perfectly cooked. This can lead to an uneven texture.
However, baking in glass or Pyrex allows for more even heat distribution. This means your blondies will develop a lovely, slightly crispy crust around the edges while remaining gloriously soft and delightfully chewy all the way through the middle. This yields that ideal uniform, tender texture that everyone craves in a blondie. While a metal pan can still produce a good blondie, for that truly perfect chewiness and consistent bake, a glass dish is highly recommended. As you can see from my own experience, even when I revisited and remade these in 2022 using a beautiful vintage glass baking dish, the results were consistently excellent.

But… I can’t guarantee that these peanut butter blondies will even last long enough to be iced!
If you tried this recipe and absolutely loved it, please take a moment to leave a 🌟 star rating and share your thoughts in the comments section below. Your feedback and comments truly brightens my day!
Rated 5 out of 5 stars based on 2 ratings
Reese’s Peanut Butter Blondies
Chef Lindsey
20
20-25
40-45
32
blondies
Comment
Print Recipe
Ingredients
For the Blondie:
- 1 ½ cups all-purpose flour
- 2 teaspoons baking powder
- 1 teaspoon kosher salt
- ¾ cup unsalted butter (1 ½ sticks)
- 2 cups light brown sugar (packed)
- 2 large eggs
- 1 teaspoon vanilla extract
- ½ cup Reese’s peanut butter chips
- ½ cup Ghirardelli milk chocolate chips
- 1 cup rounded mini Reese’s cups
For the Reese’s Peanut Butter Icing:
- 6 tablespoons unsalted butter
- ½ cup evaporated milk
- ⅛ teaspoon salt
- 6 oz Reese’s Peanut Butter Chips
- 1 ½ cups sifted powdered sugar (approximately)
Instructions
To Make the Blondie:
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Preheat your oven to 350°F (175°C). Generously butter a 13x9x2 inch glass or Pyrex baking pan. This step is crucial for easy removal and ensures a perfect crust.
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In a medium bowl, whisk together the all-purpose flour, baking powder, and kosher salt. Set this dry mixture aside.
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Melt the unsalted butter in a medium skillet over medium heat. Swirl the butter frequently, watching closely as it transforms. The butter will foam, then subside, revealing golden-brown bits at the bottom and emitting a rich, nutty aroma. This process typically takes 5-7 minutes. Immediately transfer the brown butter, ensuring you scrape all those flavorful browned bits from the pan, into a separate medium bowl. This browned butter is key to the blondies’ unique depth of flavor.
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Add the packed light brown sugar to the warm brown butter. Using an electric mixer, beat until thoroughly combined and the mixture resembles wet sand, approximately 2-3 minutes. This step helps create the chewy texture.
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Incorporate the large eggs and vanilla extract. Continue to beat with the electric mixer for about 2 minutes until the mixture becomes light and fluffy.
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Gradually add the reserved dry ingredients to the wet mixture, beating until just smooth. Be careful not to overmix, as this can lead to tough blondies. The batter will be notably thick at this stage.
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Gently fold in the Ghirardelli milk chocolate chips, Reese’s peanut butter chips, and rounded mini Reese’s cups until evenly distributed throughout the thick batter.
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Transfer the blondie batter into your prepared baking dish. Using an offset spatula or the back of a spoon, carefully spread the batter evenly across the pan.
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Bake the blondie for 20-25 minutes, or until the top is golden brown and the center no longer jiggles when gently shaken. Due to the abundance of delicious mix-ins, a toothpick test won’t be reliable here. Trust the visual cues and gentle jiggle test. Avoid over-baking, which can result in dry blondies. Once baked, let the blondie cool completely in the pan on a wire rack before frosting. This is essential for the icing to set properly.
For the Reese’s Peanut Butter Icing:
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In a heatproof bowl, combine the unsalted butter, evaporated milk, and a pinch of salt. Place this bowl over a pan of simmering water (a bain-marie setup), ensuring the bottom of the bowl does not touch the water. Cook, stirring frequently, until the butter is completely melted and the mixture is hot to the touch.
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Remove the bowl from the heat. Add the Reese’s Peanut Butter Chips to the hot mixture. Using an electric hand mixer, beat until the chips have fully melted and the icing is wonderfully smooth and lump-free.
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Allow the icing to cool down slightly. This step typically takes about 15 minutes. Stirring it occasionally will help it cool more quickly and prevent a skin from forming.
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Gradually add the sifted powdered sugar to the cooled icing, beating with the electric mixer until the icing reaches a thick, spreadable consistency. You may need to adjust the amount of powdered sugar slightly to achieve your desired thickness – it should be thick enough to hold its shape but still easy to spread.
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Once the blondies are completely cool, spread the luscious Reese’s peanut butter icing evenly over the top using an offset spatula or the back of a spoon. Allow the icing to set slightly before cutting and serving for the cleanest slices.
Notes & Tips for Success
Yield: This recipe makes approximately 32 rich blondies. Perfect for sharing at a gathering or keeping a generous stash for yourself!
Scaling the Recipe: You can easily halve this recipe and bake it in an 8 x 8 inch (20×20 cm) baking dish. If halving, adjust baking time accordingly, usually around 20-25 minutes, keeping a close eye on the jiggle test for doneness.
Perfectly Browning Butter: This step is critical for flavor development, so don’t rush it! Keep the heat at medium, swirl the pan frequently, and remove from heat as soon as you see distinct amber bits and smell a rich, nutty aroma. Immediately scrape all the flavorful browned bits into your bowl; they are pure magic! Be careful, as butter can go from perfectly browned to burnt very quickly.
Avoid Overmixing: Once you add the dry ingredients to the wet, mix just until they are combined and smooth. Overmixing develops gluten, which can result in tough, dense blondies instead of the desired chewy texture.
Cool Completely Before Frosting: Resist the urge to frost warm blondies! The warm temperature will cause the icing to melt and run, creating a messy result. Patience is key for a beautifully set, firm frosting.
Nutrition Information (Estimated Per Serving)
Carbohydrates: 36g |
Protein: 3g |
Fat: 13g |
Saturated Fat: 7g |
Polyunsaturated Fat: 1g |
Monounsaturated Fat: 4g |
Trans Fat: 1g |
Cholesterol: 30mg |
Sodium: 205mg |
Potassium: 106mg |
Fiber: 1g |
Sugar: 29g |
Vitamin A: 233IU |
Vitamin C: 1mg |
Calcium: 55mg |
Iron: 1mg
Dessert, Sweet Snack
American
267
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Frequently Asked Questions (FAQs) About Reese’s Peanut Butter Blondies
Q: What is the main difference between a blondie and a brownie?
A: The fundamental distinction lies in their base flavor. Brownies are typically chocolate-based, using cocoa powder or melted chocolate, which gives them their signature dark color and rich chocolate intensity. Blondies, often referred to as “blond brownies,” omit cocoa. Their characteristic rich, buttery, and caramel-like flavor comes from brown sugar and butter, with vanilla, nuts, or white chocolate often serving as primary flavor notes. Our Reese’s blondies perfectly exemplify this, relying on the brown sugar and butter base complemented by the irresistible peanut butter and chocolate additions.
Q: Can I use crunchy peanut butter for the icing?
A: While crunchy peanut butter can be a fantastic addition to the blondie batter itself for extra texture, it is generally not recommended for the icing. The goal for this specific Reese’s Peanut Butter Icing is to achieve a silky smooth, luxurious consistency that melts in your mouth. Crunchy peanut butter would introduce undesirable chunks, making it difficult to spread evenly and detracting from the desired velvety mouthfeel. For the best icing results, always opt for smooth peanut butter or, as in this recipe, Reese’s Peanut Butter Chips to achieve that perfect creamy finish.
Q: What’s the best way to properly brown butter for this recipe?
A: Browning butter is a culinary game-changer for these blondies. To do it correctly, melt unsalted butter in a light-colored skillet over medium heat – a light pan helps you monitor the color changes easily. As it melts, the butter will foam. Continue cooking, swirling the pan every minute or so. The foam will eventually subside, and you’ll see golden-brown bits forming at the bottom, accompanied by a rich, nutty aroma. The moment you detect this nutty fragrance and see the amber bits, immediately remove the skillet from the heat. Promptly pour the browned butter, ensuring you scrape all those flavorful browned solids from the pan, into a separate heatproof bowl. Be vigilant, as butter can burn very quickly if left unattended for too long.
Q: Can I freeze these Reese’s Peanut Butter Blondies for later?
A: Absolutely! These blondies freeze exceptionally well, making them perfect for meal prep or saving for unexpected cravings. Once they are completely cooled and the frosting has set, cut them into individual squares. Arrange the squares in a single layer on a baking sheet and freeze until they are firm. Afterward, transfer the frozen blondie squares to an airtight freezer-safe container or a heavy-duty freezer bag, using parchment paper between layers to prevent sticking. They can be stored in the freezer for up to 2-3 months. When you’re ready to enjoy, simply thaw them at room temperature for about 30 minutes, or warm them slightly in the microwave for a gooey treat.
Q: What if I don’t have mini Reese’s cups? Can I use regular-sized ones instead?
A: Yes, you can certainly adapt this recipe if you only have regular-sized Reese’s peanut butter cups. Simply chop the larger cups into smaller, bite-sized pieces before folding them into the blondie batter. The key is to have delicious, evenly distributed chunks of Reese’s throughout each blondie, so any size that’s manageable for mixing and enjoyable to eat will work beautifully. This flexibility ensures you can still enjoy these amazing blondies even if you don’t have the mini version on hand.
Storage and Serving Suggestions for Your Blondies
Proper Storage: To maintain their optimal freshness and chewy texture, store your leftover Reese’s Peanut Butter Blondies in an airtight container at room temperature for up to 3-4 days. If you live in a warmer climate, or if you prefer them a bit firmer, you can refrigerate them for up to a week. If refrigerated, it’s a good idea to let them sit at room temperature for about 15-20 minutes before serving. This allows them to soften slightly and brings out their best flavor and chewiness.
Serving Ideas: These blondies are absolutely magnificent on their own, a perfect treat with a cup of coffee or a glass of milk. However, if you’re looking to elevate the dessert experience even further, consider serving them warm with a scoop of premium vanilla bean ice cream. The delightful contrast between the warm, soft, and chewy blondie and the cold, melting ice cream is simply divine. A drizzle of warm chocolate fudge sauce, a dollop of whipped cream, or an extra sprinkle of Reese’s peanut butter chips would also make for a truly spectacular and indulgent presentation.
Indulge in Pure Peanut Butter Bliss
These Reese’s Peanut Butter Blondies are more than just a dessert; they are a delightful tribute to one of the most beloved candy combinations: peanut butter and chocolate. From the nuanced, rich brown butter base to the generous, satisfying medley of Reese’s cups and chips, all perfectly united by that sensational, creamy peanut butter icing, every single element of this recipe is meticulously crafted for pure indulgence. This recipe is designed to be straightforward and approachable, yet it consistently yields impressive results that are guaranteed to be a massive hit at any family gathering, party, or simply as a well-deserved, decadent treat for yourself.
Don’t hesitate any longer to bake a batch of these extraordinary blondies. They are absolutely guaranteed to become a cherished and frequently requested addition to your personal recipe collection. Gather your ingredients, prepare for an amazing aroma to fill your kitchen, and get ready to enjoy truly happy baking!
Explore More Delicious Creations From Chef Lindsey
I sincerely hope you thoroughly enjoyed preparing and tasting this professional chef-tested recipe. If you’re a devoted fan of delightful dessert bars and crave more tempting treats, be sure to explore our extensive collection of other fantastic Brownies and Bars Recipes. For those seeking a refreshing and lighter twist on the classic blondie, you might also discover a new favorite with my bright and zesty Lemon Blondies, offering a wonderful citrus variation to broaden your baking repertoire!