If you’re a fan of chocolate and peanut butter (and honestly, who isn’t?), you’re going to absolutely flip for The ULTIMATE One Bowl Reese’s Brownie Recipe. This recipe has everything you want in a brownie—rich chocolate, gooey peanut butter pockets, and that perfect fudgy texture—but here’s the kicker: it all comes together in one bowl, making cleanup a breeze. I discovered this gem on a busy weekend when I wanted something impressive yet simple, and trust me, these brownies stole the show.

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Why You’ll Love This Recipe

One Bowl Magic: Minimal dishes in the kitchen mean more time enjoying your brownies.
Peanut Butter Perfection: Reese’s Peanut Butter Cups and chips add that iconic flavor burst in every bite.
Fudgy, Not Dry: These brownies are perfectly underbaked for a moist, chewy center you’ll crave.
Fun Texture: The Reese’s Pieces on top add a fantastic pop of color and crunch.

A close-up view of a stack of three chocolate brownies on a white marbled surface, each square showing a rich, dark brown texture mixed with crunchy walnut pieces inside. The top brownie has bright orange, yellow, and brown candy-coated chocolates scattered on the top surface, adding colorful spots of smooth, glossy texture. The middle brownie is bitten to reveal a gooey caramel layer mixing with the dark chocolate base and nuts inside, while some of the candy pieces peek out from the edges. Around the brownies are loose orange, yellow, and brown candy-coated chocolates, adding extra color to the scene. photo taken with an iphone --ar 4:5 --v 7

Ingredients You’ll Need

Everything in this recipe works together to create layers of flavor and texture that make these brownies irresistible. I always recommend buying good-quality cocoa powder for that deep chocolate taste and making sure your peanut butter chips and Reese’s candies are fresh.

All purpose flour: Gives structure without weighing down the brownies.
Unsweetened cocoa powder: Use Dutch-processed for a smoother, richer flavor if you have it.
Granulated sugar: Sweetens and helps create a slightly crackly top.
Salt: Enhances and balances out the sweetness perfectly.
Large eggs: Key for binding ingredients and adding moisture.
Vegetable oil: Keeps the brownies moist and tender without a strong flavor.
Peanut butter chips: Sprinkle these throughout for melty, creamy peanut butter moments.
Miniature Reese’s Peanut Butter Cups: The star that creates gooey, chocolatey pockets. You can leave them whole or chop for more distribution.
Reese’s Pieces: Adds color and a crunchy surprise on top.

Note: You’ll find the complete list of ingredients, along with their exact measurements, in the printable recipe card at the bottom of this post.

Variations

I love how versatile this recipe is. Over time, I’ve played around with a few tweaks to fit different occasions or tastes, and you should definitely feel free to customize it too—after all, what’s baking if not a fun experiment?

Nut-Free Version: I once swapped Reese’s Pieces for mini chocolate chips and peanut butter chips for white chocolate chips when making these for a friend’s kid with allergies—and nobody missed the nuts!
Extra Gooey: Adding an extra egg yolk made these brownies even fudgier for a decadent treat I enjoyed on a slow Sunday afternoon.
Salted Caramel Twist: Drizzle caramel sauce on top before baking and sprinkle with sea salt for an irresistible sweet-salty combo that’s always a crowd-pleaser.
Double Reese’s: Swap the plain granulated sugar for brown sugar or a mix to deepen the flavor and add chewiness – a trick I picked up from a baker friend.

How to Make The ULTIMATE One Bowl Reese’s Brownie Recipe

Step 1: Mix your dry ingredients

Start by preheating your oven to 350°F and lining a 9×13” pan with foil—spray it well with nonstick cooking spray so the brownies come out easily. In a large bowl, whisk together the flour, cocoa powder, granulated sugar, and salt until fully combined. This ensures your cocoa is well incorporated and helps prevent lumps later.

Step 2: Stir in the eggs and oil

Next, add your eggs and vegetable oil to the dry mix. Use a sturdy spoon or spatula to stir until the batter is smooth and no pockets of flour remain. It’ll be thick but shiny and a little fluffy looking—this is the perfect brownie texture foundation.

Step 3: Add the peanut butter chips

Fold your peanut butter chips gently into the batter. These little gems will melt into creamy pockets of richness once baked, and they’re a total game-changer. I always sneak a few extra chips for me!

Step 4: Layer your batter and candy

Spread about half of your brownie batter into the prepared pan, smoothing it out with a spatula. Now, carefully place your miniature Reese’s Peanut Butter Cups over this first layer. You can keep them whole for nice pockets of peanut butter surprise, or chop them up if you want the flavor spread more evenly (personal preference alert!). Then, dollop and spread the remaining batter over the top, and sprinkle those colorful Reese’s Pieces evenly across the batter’s surface.

Step 5: Bake and cool

Bake for 20 to 26 minutes. Here’s the trick—you want to pull them out when the brownies just stop jiggling in the center. They’re meant to be fudgy, so don’t be tempted to overbake. Trust me, my family goes crazy for these slightly underdone brownies that stay moist and chewy. Once out, set the pan somewhere to cool completely before slicing.

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Pro Tips for Making The ULTIMATE One Bowl Reese’s Brownie Recipe

Don’t Overmix: Stir the wet and dry ingredients until just combined to avoid tough brownies.
Reese’s Chickening: I found unwrapping the mini peanut butter cups beforehand saves you from biting into foil—saves frustration, trust me!
Watch Your Bake Time: Keep an eye after 20 minutes—pull them out early rather than later for fudgy texture.
Let Cool Completely: Cutting too soon makes the brownies crumbly, so give them time to set up.

How to Serve The ULTIMATE One Bowl Reese’s Brownie Recipe

A close-up of three stacked chocolate brownies filled with peanut butter pockets and topped with colorful candy pieces in bright orange, yellow, and brown. Each brownie has a rich, dark brown base with visible swirls of creamy peanut butter creating light brown patches inside. The top layer is scattered with shiny candy coating pieces in vibrant colors, adding texture and brightness. Around the bottom brownie, scattered chocolate and peanut butter candies rest on a wooden surface with a white marbled background softly blurred behind. The focus shows the gooey middle layers and crunchy candy toppings clearly. photo taken with an iphone --ar 4:5 --v 7

Garnishes

When I’m serving these brownies, a light dusting of powdered sugar or a small drizzle of melted peanut butter on top amps up the presentation and flavor. Sometimes fresh raspberries on the side add a tart contrast that really wakes up the peanut butter and chocolate flavors.

Side Dishes

I like pairing these brownies with classic vanilla ice cream or a scoop of peanut butter frozen yogurt. For a party twist, some homemade whipped cream sprinkled with cocoa powder is a simple yet elegant sidekick.

Creative Ways to Present

For special occasions, I’ve cut these into bite-sized squares and served them on a platter with small decorative toothpicks. Another fun idea is layering broken pieces into a parfait glass alternating with whipped cream and chopped nuts for a rich dessert parfait everyone loves.

Make Ahead and Storage

Storing Leftovers

Store these brownies in an airtight container at room temperature, and they stay fresh for up to three days. I usually keep mine on the counter for easy access—but if your kitchen’s warm, the fridge works fine too.

Freezing

I’ve frozen leftover brownies by wrapping them tightly in plastic wrap and foil. When thawed, they still taste fresh and retain their fudgy texture—a lifesaver when you want to prep desserts ahead of time.

Reheating

To revive leftover brownies, I pop a piece in the microwave for 10-15 seconds or warm a few in the oven wrapped in foil. They come out warm and gooey again, almost like fresh-baked.

FAQs

Can I use natural peanut butter instead of peanut butter chips?

You could, but peanut butter chips are designed to hold their shape while melting slightly; natural peanut butter might make the batter overly wet or greasy. If you want to substitute, try dolloping spoonfuls of chilled peanut butter instead.
Why do the brownies sometimes come out dry?

Overbaking is the most common culprit. Remember, The ULTIMATE One Bowl Reese’s Brownie Recipe is best when just set in the middle and still slightly underdone. Keep an eye on the timer and test with a gentle jiggle.
Can I make these gluten-free?

Absolutely! Replace all-purpose flour with a gluten-free blend that’s a one-to-one substitute. Make sure your cocoa powder and other ingredients don’t have hidden gluten. The texture might differ slightly but still delicious!
What’s the secret to keeping Reese’s Pieces crunchy on top?

I sprinkle Reese’s Pieces on top right before baking so they lightly soften but retain some crunch. Adding them too early or mixing into the batter can cause them to melt or lose texture.

Final Thoughts

I truly believe this is The ULTIMATE One Bowl Reese’s Brownie Recipe because it’s a delightful mix of ease and indulgence. It’s one of those recipes that makes you look forward to dessert night, guaranteed to impress friends and family without stress. Give it a try—you’ll be handing out the recipe before you know it!