Desserts
This chocolate chip brownie recipe with Reese’s pieces delivers the perfect balance of fudgy centers and peanut butter swirls—a dessert that combines classic brownie richness with the iconic Reese’s flavor profile.
The secret lies in folding in melted Reese’s bars and pieces at just the right moment, creating pockets of creamy peanut butter that contrast beautifully with the dense chocolate base.
I developed this recipe after years of experimenting with brownie textures, and the result is a crowd-pleaser that feels indulgent yet stays true to home-baked quality.
The process is straightforward but requires attention to detail—preheating the oven to 350°F, using high-quality cocoa powder, and baking for exactly 25-30 minutes ensures a moist center without over-browning.
The addition of Reese’s pieces isn’t just for flavor; it adds a satisfying crunch and melty texture that elevates every bite. Whether you’re baking for a holiday dessert table or a simple weekend treat, these brownies deliver restaurant-quality results with minimal effort.
What makes this recipe stand out is the peanut butter swirls—achieved by spreading a thin layer of melted peanut butter across the batter before baking. This technique creates marbled patterns that look impressive and taste even better.
The brownies stay moist for days when stored properly, making them ideal for meal prep or gifting. Serve them warm with a scoop of vanilla ice cream or a dollop of whipped cream for the ultimate indulgence.
For those who love customization, you can adjust the sweetness by adding more or fewer Reese’s pieces, or even swap in other mix-ins like white chocolate chips or chopped nuts.
The key is balancing the richness of the peanut butter with the deep chocolate flavor—once you master that, you’ll have a dessert that’s impossible to resist. Let’s get baking!
Ingredients for chocolate chip brownie reese's
Twelve ingredients. Two textures. One irresistible dessert that’s all about balance.
| Ingredient | Amount | Notes |
|---|---|---|
| All-Purpose Flour 🌾 | 1 ½ cups | Sifted for even texture |
| Granulated Sugar 🍚 | 1 ½ cups | Light brown preferred |
| Unsalted Butter 🧈 | 1 cup | Room temperature, full-fat |
| Extra-Dark Cocoa Powder 🍫 | ¾ cup | Dutch-processed preferred |
| Large Eggs 🥚 | 2 whole | Room temperature |
| Vanilla Extract 🌿 | 1 tsp | Pure, high-quality |
| Salt 🧂 | ½ tsp | Fine sea salt |
| Baking Powder 🍞 | ½ tsp | Aluminum-free |
| Chocolate Chips 🍫 | 1 ½ cups | Semi-sweet, good quality |
| Reese's Pieces 🥜 | 1 ½ cups | Miniature, not full bars |
| Creamy Peanut Butter 🥜 | ½ cup | Natural, no added sugar |
| Reese's Peanut Butter Cups 🍫 | 6 whole | Melted, not chopped |
The cocoa powder is non-negotiable here—Dutch-processed like Hershey’s Special Dark or Ghirardelli makes the difference. Trader Joe’s or Whole Foods bulk sections have great options, but don’t skimp on the chocolate chips either. Ghirardelli or Guittard chips melt better than store brands. For the peanut butter, natural, no-stir brands (like Smucker’s Natural) give you that rich, creamy texture without extra sugar. The Reese’s pieces? Grab the miniatures—they melt faster and distribute better throughout the batter. And yes, you want full-fat butter here (the good stuff, not the pre-melted tub).
No Dutch-processed cocoa? Natural cocoa powder works at the same amount, but the flavor will be slightly more bitter. Short on Reese’s pieces? White chocolate chips or chopped peanuts add crunch, though nothing beats that peanut butter flavor. The peanut butter cups need to be melted completely—microwave in 20-second bursts to avoid burning. Want extra peanut butter swirls? Double the peanut butter to 1 cup and spread it thicker before baking. And if you’re worried about the brownies being too sweet, reduce the sugar to 1 cup—trust me, the peanut butter balances it perfectly.
These brownies stay moist for 5-6 days in an airtight container at room temperature, but honestly, they’re best eaten fresh. For gifting, wrap individual squares in parchment and tie with twine—looks fancy, stays fresh. Freeze for up to 3 months if you’re prepping ahead, but let them thaw completely before serving. And pro tip: underbake by 2 minutes if you like them extra fudgy—they’ll keep cooking off the tray.
Why You'll Love This Recipe
- Five-Ingredient Magic: I swear by this list—flour, sugar, butter, cocoa, and eggs. That’s it. No weird substitutions, no extra bowls. Just melt the butter, mix it all together, and bake. Honestly, it’s the kind of recipe that makes me feel like I’ve hacked baking.
- Peanut Butter Meets Fudgy: The Reese’s pieces aren’t just an afterthought—they melt into those rich chocolate pockets while the extra-dark cocoa keeps it deep and decadent. Between us, the first bite always makes me pause. That’s the kind of flavor that sticks with you.
- Weeknight or Party Star: I’ve pulled this out for lazy Tuesdays and holiday desserts, and it never lets me down. Cut into squares for a quick snack, or go all out with a dusting of powdered sugar and a scoop of vanilla ice cream. It’s the crowd-pleaser I always reach for.
- No-Waste Leftovers: A full pan bakes up fast, but the best part? Those leftovers stay fresh for days. I’ll wrap them tightly and keep them in the fridge—perfect for a midweek pick-me-up or a last-minute gift. (Yes, even on a Tuesday night.)
Step-by-step instructions for chocolate chip brownies with Reese's
This method delivers rich, fudgy brownies with peanut butter swirls and melty Reese's pockets every time.
Melt Butter and Chocolate for Maximum Richness
In a medium saucepan, melt the 1 cup unsalted butter over low heat. Once fully melted, remove from heat and stir in the 1.5 cups granulated sugar and 0.75 cup extra-dark cocoa powder until completely smooth. This creates the base for our rich brownie batter.
Return the mixture to low heat and stir in the 1.5 cups chocolate chips and 1.5 cups Reese's pieces until fully melted and evenly distributed. The chocolate should look glossy and fully incorporated—no lumps allowed. Here's the thing—this step is where the magic happens for that perfect chocolatey flavor in every bite.
Mix Wet Ingredients and Fold in Dry Components
In a separate large bowl, whisk together the 2 whole large eggs, 1 tsp vanilla extract, 0.5 tsp salt, and 0.5 tsp baking powder. The mixture will look slightly frothy—this is good. Add the melted chocolate mixture from Step 1 and stir until fully combined.
Gently fold in the 1.5 cups all-purpose flour using a spatula, mixing just until no dry flour remains. Be careful not to overmix—you want to maintain that fudgy texture. The batter should be thick but pourable. This is where the structure of our brownies begins to form without becoming cakey.
Prepare the Peanut Butter Swirl Mixture
In a small microwave-safe bowl, melt the 6 whole Reese's peanut butter cups in 20-second intervals, stirring between each, until completely smooth. Stir in the 0.5 cup creamy peanut butter until fully combined. This mixture should be thick but spreadable—like a rich peanut butter frosting.
Here's a pro tip: If the mixture is too thick, add 1 teaspoon of milk (though we're not using milk in this recipe, it's a common fix). The peanut butter swirl is what makes these brownies special, so take your time getting this part right.
Layer and Bake for Perfect Texture
Preheat your oven to 350°F and line an 8x8-inch baking pan with parchment paper, leaving an overhang on the sides for easy removal. Pour about half of the brownie batter into the prepared pan and spread it evenly.
Drizzle about half of the peanut butter mixture over the batter, then use a knife to swirl it gently through the batter. Add the remaining brownie batter and repeat with the remaining peanut butter mixture. The swirls should be visible but not too pronounced—think marbled rather than striped.
Bake to Golden Perfection and Cool Properly
Bake for 25-30 minutes until a toothpick inserted in the center comes out with moist crumbs (not wet batter). The edges should be set but the center should still look slightly underdone—this ensures that fudgy texture we're after.
Remove from the oven and let the brownies cool in the pan for 10 minutes before transferring to a wire rack to cool completely. This cooling process is crucial—it allows the brownies to set properly and prevents them from being too gooey when you cut into them. Serve warm or at room temperature for the best experience.
Pro Tips For Making Chocolate Chip Brownie Reese'S
- Melt Butter Slowly: I learned this the hard way—dumping cold butter into hot cocoa powder or sugar causes lumps that never fully dissolve. Use a double boiler or microwave in 20-second bursts, stirring between each, until the butter is completely smooth. Your batter will be silky, not grainy.
- Sift That Cocoa: Extra-dark cocoa powder is dense and clumpy, and it packs into your measuring cup. Spoon it in first, then sift it directly into the dry ingredients. This guarantees even distribution—no bitter pockets or uneven texture. (Yes, even if you’re impatient like me.)
- Test Doneness Early: These brownies are dense, so they won’t spring back when touched. Instead, poke the center with a toothpick at 28-30 minutes—if it comes out with moist crumbs (not wet batter), they’re done. Overbaking turns them dry, and nobody wants that.
- Chill the Batter: Mixing the batter at room temperature? Stop. Refrigerate it for 20-30 minutes before baking. The fat firms up slightly, preventing a cakey texture and ensuring a fudgy, crackly top. (Your future self will thank you.)
Essential equipment for great chocolate chip brownie reese's
Must-Have Baking Tools
Start with a 9x9-inch or 8x8-inch metal baking pan—I recommend Wilton Perfect Results pans for even heat distribution. A heat-resistant silicone spatula (like OXO Good Grips) helps spread batter smoothly without scratching your pan.
Don't skip a digital kitchen scale (I use OXO Good Grips) for precise measurements—brownie recipes are unforgiving when it comes to ingredient ratios. 🔥
Essential Mixing Gear
A medium saucepan with sloped sides makes melting butter and chocolate easier—All-Clad Stainless Steel is my go-to. For mixing, a large mixing bowl (I prefer Pyrex glass) handles the thick batter better than metal.
A hand mixer (like KitchenAid KSM150PSER) saves time when combining wet ingredients, but a whisk works too if you're mixing by hand. The key is avoiding overmixing to keep those brownies fudgy.
Peanut Butter Swirl Tools
You'll need a small microwave-safe bowl (I use Glasslock containers) for melting the peanut butter cups. A flexible silicone spatula (like Epicurean) helps spread the peanut butter mixture evenly. For swirling, a small offset spatula (similar to Wilton 12-inch) gives you more control than a butter knife.
Pro tip: Dip the spatula in warm water between swirls to prevent sticking.
Temperature Control Essentials
An oven thermometer (I swear by Thermoworks Oven Thermometer) ensures your oven is truly at 350°F—many home ovens run hot or cold. A wire cooling rack (like OXO Good Grips) prevents soggy bottoms while cooling.
For testing doneness, keep a toothpick handy—it should come out with moist crumbs, not wet batter. I also recommend parchment paper (from Reynolds) for easy release and clean-up.
Optional Upgrades
For extra precision, a baking stone (like Lekue) helps create a crispier bottom crust. A stand mixer (like KitchenAid Artisan) makes mixing large batches easier, though it's not essential. If you love presentation, invest in a sharp pizza wheel (I use Regina Professional) for clean cuts.
For storage, airtight containers (like Rubbermaid Brilliance) keep brownies fresh for days. 💫
Nutrition facts
Frequently asked questions
Can I substitute Reese’s pieces with something else?
If you're out of Reese’s pieces, try white chocolate chips or chopped peanuts for crunch. For extra peanut flavor, use crushed peanut butter cups instead. The key is maintaining that mix of textures—whether it's melty chocolate or nutty crunch.
Why do my brownies turn out cakey instead of fudgy?
Overmixing the batter or using too much flour are the usual culprits. Always mix just until the flour disappears, and measure carefully—1.5 cups flour is perfect for this recipe. Also, don’t overbake! Remove them when the toothpick has moist crumbs, not wet batter.
How do I make these brownies extra gooey?
For maximum fudginess, reduce the flour to 1.25 cups and add 1 extra tablespoon cocoa powder. Also, underbake by 1-2 minutes—the center should look slightly underdone. Let them cool completely before slicing for clean cuts.
Can I make these brownies gluten-free?
Yes! Replace the all-purpose flour with a 1:1 gluten-free baking flour blend (like Bob’s Red Mill). For best results, add 1 teaspoon xanthan gum to help bind the batter. The texture will be slightly different but still delicious.
What’s the best way to store leftovers?
Wrap tightly in plastic wrap or store in an airtight container at room temperature for 4-5 days. For longer storage, freeze for up to 3 months. Thaw at room temperature before serving—microwaving can make them too soft.