Name: Peanut Butter Blondies with Reese’s Pieces and Chocolate Chips Recipe
Prep time: 10 min
Cook time: 30 min
Total time: 40 min
Cuisine: American
Ingredients: 2/3 cup unsalted butter (170 grams); 3/4 cup peanut butter (about 270 grams); 3 large eggs; 2 teaspoons vanilla extract; 2 cups all-purpose flour (250 grams); 2 cups light brown sugar (420 grams); 1/4 teaspoon salt; 3/4 cup Reese’s Pieces (about 140 grams); 3/4 cup chocolate chips (about 120 grams)

Jump to Recipe· 4.4 from 5 reviews

I absolutely adore making these Peanut Butter Blondies with Reese’s Pieces and Chocolate Chips Recipe whenever I need a comforting, sweeter treat that’s bursting with peanut butter goodness and playful pops of candy and chocolate. They have this warm, chewy crumb that just melts in your mouth, paired with colorful Reese’s Pieces and rich chocolate chips that add fun texture and flavor in every bite. Whenever I want to impress friends or just enjoy a cozy night in, this recipe feels like the ultimate hug in dessert form.

Why You’ll Love This Peanut Butter Blondies with Reese’s Pieces and Chocolate Chips Recipe

To me, the magic of this Peanut Butter Blondies with Reese’s Pieces and Chocolate Chips Recipe is in its perfectly balanced flavor profile. The nutty, creamy peanut butter merges so seamlessly with the caramel-like sweetness of brown sugar, while the Reese’s Pieces bring delightful bursts of fruity candy notes alongside melty chocolate goodness. Every bite combines chewy, buttery richness with pockets of sweet, chewy, and melty bits that keep you coming back for more. I find myself savoring each piece like it’s a small celebration.

But it’s not just the taste that makes me head over heels for this recipe—it’s how incredibly easy it is to whip up! Melting butter and peanut butter together, mixing in sugar and eggs, gently folding in a few pantry staples, and tossing in the candies turns baking into pure fun and simplicity. Plus, it’s versatile enough for casual weeknight snacks, a festive holiday treat, or a crowd-pleaser at parties. I’ve shared these blondies many times and the smiles they bring are priceless. They’re just downright special without any complicated fuss.

Ingredients You’ll Need

A clear glass bowl sits on a white marbled surface, filled with a thick light brown batter spread smoothly on the bottom. On top, there are two piles of toppings: one side has small dark brown chocolate chips, and the other side has colorful candy-coated pieces in bright orange, yellow, and brown. A black spatula with a wooden handle rests next to the bowl. photo taken with an iphone --ar 4:5 --v 7

The beauty of this blondies recipe lies in its simple, quality ingredients that come together to create a rich and satisfying flavor and texture. Each element plays a crucial role—from the creamy peanut butter to the sweet burst of Reese’s Pieces, these ingredients make the magic happen.

Unsalted butter (2/3 cup): Melts perfectly with peanut butter to create a luscious base for the blondie batter.
Peanut butter (3/4 cup): Adds that signature nutty richness and moist texture that defines the blondies.
Light brown sugar (2 cups): Brings deep caramel notes and keeps the bars chewy and tender.
Vanilla extract (2 teaspoons): Enhances the flavor, making the dessert even more aromatic and comforting.
Eggs (3 large): Provide structure while keeping the blondies soft and dense.
All-purpose flour (2 cups): The backbone that holds everything together without weighing it down.
Salt (1/4 teaspoon): Balances the sweetness and highlights the peanut butter’s flavor.
Reese’s Pieces (3/4 cup): Offer colorful, fruity bites that complement the peanut butter perfectly.
Chocolate chips (3/4 cup): Melt during baking for gooey pockets of rich chocolate delight.

Directions

Step 1: Preheat your oven to 350°F (180°C) and prepare a 9×13-inch pan by lining it with parchment paper, leaving an overhang to make removal easier, or lightly grease the pan for a non-stick surface.

Step 2: In a microwave-safe bowl, melt the unsalted butter and peanut butter together. When they’re nearly melted, stir until smooth and fully combined, ensuring there are no lumps of peanut butter left.

Step 3: Whisk the light brown sugar into the warm butter and peanut butter mixture until combined and glossy. Then add the eggs one at a time, followed by the vanilla extract, whisking fully until the mixture is uniform and you no longer see egg streaks.

Step 4: Gently fold in the all-purpose flour and salt, being careful to mix only until you no longer see dry streaks or lumps. Overmixing can lead to tough blondies, so keep it light and fluffy.

Step 5: Fold in the Reese’s Pieces and chocolate chips evenly throughout the batter. Resist the temptation to eat too many while mixing!

Step 6: Pour the batter into your prepared pan and spread it into an even layer with a spatula, smoothing the top gently for a pretty finish.

Step 7: Bake for about 30 minutes, but keep an eye on them after 25 minutes. The blondies are done when the top looks set and a toothpick inserted comes out clean or with just a few moist crumbs. If you prefer less gooey bars, baking for up to 35 minutes will give you a firmer texture.

Step 8: Let the blondies cool in the pan. When cool enough, but still warm, lift the parchment overhang to transfer the bars onto a cutting board and slice with a sharp, thin knife. I like to wait about 2 1/2 hours so the chocolate chips and Reese’s Pieces stay slightly melty but the bars hold their shape beautifully.

Servings and Timing

This recipe makes about 15 generous servings, perfect for sharing or saving some for later cravings. Prep time is quick, roughly 10 to 15 minutes, since melting and mixing are straightforward. Baking takes about 30 minutes, though you can adjust this slightly depending on your preferred texture. Cooling time is an important patience test—plan for at least 2 hours for the blondies to set properly before slicing, so everything stays beautifully gooey but not messy. Total time, including cooling, rounds up to about 40-50 minutes active plus resting.

How to Serve This Peanut Butter Blondies with Reese’s Pieces and Chocolate Chips Recipe

The image shows two stacked square cookie bars with a thick, soft texture. The bottom bar is golden brown with visible chunks of orange, white, and dark chocolate candy pieces inside, giving it a speckled look. The top bar is similar but is broken slightly, revealing gooey dark chocolate chips inside. The bars are placed on a white marbled surface with a few candy pieces scattered around them. The background is plain and bright white, focusing attention on the bars. photo taken with an iphone --ar 4:5 --v 7

When it comes to serving these blondies, I love to keep things fun and inviting. They’re already packed with flavor, so simple is often best. Serving them warm or at room temperature highlights their luscious, chewy texture and that melt-in-the-mouth quality. For a little extra indulgence, I sometimes heat individual bars briefly in the microwave and add a scoop of vanilla ice cream or dollop of whipped cream alongside to turn these into an unforgettable dessert.

Presentation-wise, lifting the entire batch out using the parchment paper overhang makes slicing clean and easy. I like to cut generous squares, but if you’re serving at a party, bite-sized pieces are a sweet handheld treat that guests love. Garnishing with a sprinkle of additional Reese’s Pieces or a drizzle of melted chocolate can add an attractive pop of color and extra pizzazz. The mix of warm peanut butter with those vibrant candy colors is always a conversation starter.

These blondies pair wonderfully with cold milk for a comforting classic combo, but I’ve also enjoyed them alongside creamy coffee drinks or even a light, fruity white wine for a grown-up twist. They fit right in at casual family dinners, potlucks, holiday celebrations, or whenever you crave a nostalgic, crowd-pleasing treat with personality. I always keep a batch or two ready because they never last long!

Variations

I love experimenting with this Peanut Butter Blondies with Reese’s Pieces and Chocolate Chips Recipe to suit different tastes or dietary needs. For instance, swapping the all-purpose flour for a gluten-free blend works beautifully to keep them tender while accommodating gluten sensitivities. If you prefer a vegan version, using a plant-based butter and flax or chia egg replacements can create a similar chewy texture, and I find adding a tablespoon of maple syrup brings extra depth when omitting eggs.

Flavor-wise, you can get creative by switching the peanut butter to almond or cashew butter for a slightly different nutty undertone. I’ve also tried adding chopped nuts like peanuts or pecans for crunch, or stirring in white chocolate chips for a sweeter contrast. If chocolate and peanut butter are your dream combo, using peanut butter chips instead of or alongside chocolate chips is a fantastic twist. Alternative cooking methods like baking in muffin tins give you portable blondie bites that are perfect for lunchboxes or picnics.

One of my favorite tweaks has been adding a pinch of cinnamon or a drizzle of caramel sauce right before baking to deepen the flavor layers. These variations keep the recipe fresh and exciting while celebrating that beloved chewy, gooey centerpiece that makes these blondies so special to me.

Storage and Reheating

Storing Leftovers

Once cooled completely, I store leftover blondies in an airtight container at room temperature or in the refrigerator for better longevity. They keep well for up to 4 to 5 days and still taste amazing without drying out. Lining the container with parchment paper between layers helps prevent sticking and preserves their gooey texture perfectly.

Freezing

These blondies freeze wonderfully! I usually cut them into individual squares first, then wrap each piece tightly in plastic wrap followed by a layer of foil or place them in a freezer-safe container. They keep well frozen for up to 2 months. When I’m ready to enjoy one, I simply thaw it at room temperature or warm it gently in the microwave. Freezing is a great way to have these treats handy anytime.

Reheating

To bring the blondies back to life, I warm single servings in the microwave for 15 to 20 seconds—this reactivates the melty chocolate chips and soft peanut butter flavor beautifully. Avoid reheating the entire pan in the oven to preserve moisture. If the bars have been in the fridge or freezer, let them reach room temperature first before heating to avoid overheating or drying out. Reheating just a little amplifies that fresh-out-of-the-oven feeling I love.

FAQs

Can I use crunchy peanut butter instead of creamy?

Absolutely! Using crunchy peanut butter will add a nice texture to the blondies with little peanut bits dispersed throughout, enhancing the crunch factor. Just be sure to adjust mixing times slightly to incorporate those chunks evenly.

What can I substitute for Reese’s Pieces?

You can swap Reese’s Pieces for M&Ms, chopped peanut butter cups, or even caramel bits. Each option brings its own unique burst of flavor and color, but keep the same amount to maintain the blondie’s perfect balance.

How do I know when the blondies are fully baked?

Look for a set top that’s no longer shiny or jiggly. Insert a toothpick into the center—if it comes out clean or with just a few moist crumbs, they’re done. Remember, you can bake a little less for gooier bars or longer for firmer ones.

Can I make these blondies gluten-free or vegan?

Yes, with simple swaps! For gluten-free, use a certified gluten-free flour blend that measures like all-purpose flour. For vegan blondies, replace butter with a plant-based version and eggs with flax or chia egg substitutes. You might need to experiment with baking time slightly.

What’s the best way to cut these blondies without them crumbling?

Creamy, chewier blondies can be tricky to slice cleanly. I recommend cooling them thoroughly for at least 2 hours and using a thin, sharp knife gently wiped between cuts. Lifting the whole block with parchment paper first makes slicing and serving easier.

Conclusion

I’m so excited for you to try this Peanut Butter Blondies with Reese’s Pieces and Chocolate Chips Recipe because it truly feels like a little celebration in every bite. Whether you want a cozy treat for yourself or a crowd-pleasing dessert to share, these blondies deliver on flavor, fun, and comfort. Trust me, once you make them, they’ll become a treasured favorite you reach for time and time again.