As I whipped up a batch of these Chewy REESE’S PIECES Peanut Butter Brownies, the scent of melting chocolate and peanut butter danced through my kitchen, instantly lifting my spirits. Baking has a magical way of transforming ordinary moments into sweet escapes, and this recipe is no exception. With just a handful of ingredients and easy instructions, these brownies are not only a crowd-pleaser but also a delightful way to satisfy that mid-afternoon craving. You’ll love how the chewy, chocolatey bites blend perfectly with the crunchy pop of REESE’S PIECES, creating an indulgent treat that feels both familiar and exciting. Whether you’re a seasoned baker or trying your hand at dessert for the first time, this recipe is a surefire winner to brighten your day. Ready to discover your new favorite dessert? Let’s dive in!

Why Are These Brownies So Irresistible?
Chewy, every bite envelops you in rich peanut butter flavor, creating a dessert that satisfies any sweet tooth. Quick and easy, this recipe requires minimal ingredients and skills, perfect for anyone craving a homemade treat. Crowd-pleaser status is guaranteed as family and friends rave about the delightful crunch of REESE’S PIECES atop these moist brownies. Versatile options abound—experiment with chocolate chips or even swap in our Cookie Fudgy Brownies for another take on delicious decadence. Don’t forget to serve them warm with a scoop of ice cream for an indulgent touch.
Peanut Butter Brownies Ingredients
• To create these delightful treats, gather the following ingredients!
For the Brownie Batter
- Unsalted Butter – Provides richness and moisture; ensure it’s melted for a smooth batter.
- Granulated Sugar – Adds sweetness and structure; no substitutions for sweetness needed.
- Light Brown Sugar – Contributes additional moisture and subtle caramel flavor; can be replaced with dark brown sugar for a deeper flavor.
- Eggs – Essential binder for structure and moisture; use large eggs for the best results.
- Vanilla Extract – Adds warmth and depth; can substitute with almond extract for a different twist.
- Peanut Butter – The central flavor, contributing both moisture and chewiness; use half creamy and half chunky for texture.
- All-Purpose Flour – Provides structure and stability; no substitutes recommended for texture.
- Baking Powder – Acts as a leavening agent for a slight rise; ensure it’s fresh for the best results.
- Salt – Enhances overall flavor; essential, so do not omit.
For the Topping
- REESE’S PIECES – Adds delightful texture and sweetness to your brownies; you can substitute with chocolate chips or omit entirely.
Step‑by‑Step Instructions for Chewy REESE’S PIECES Peanut Butter Brownies
Step 1: Preheat and Prepare
Begin by preheating your oven to 350°F (175°C). Grab an 11 x 13-inch pan and line it with parchment paper, allowing the edges to hang over slightly. This will make lifting out the brownies a breeze later. The kitchen will soon fill with the warm, inviting aroma of baking!
Step 2: Mix the Base
In a large mixing bowl, combine melted unsalted butter and peanut butter until smooth and creamy. Next, add granulated sugar and light brown sugar, mixing until well combined and slightly fluffy. This amalgamation will create a rich base for your chewy peanut butter brownies that’s hard to resist.
Step 3: Incorporate Wet Ingredients
Slowly beat in the eggs, one at a time, ensuring each is fully incorporated before adding the next. Add in the vanilla extract along with a pinch of salt. The mixture should appear glossy and well-blended, blending seamlessly together into a velvety batter that promises plenty of flavor.
Step 4: Prepare the Dry Ingredients
In a separate bowl, whisk together all-purpose flour and baking powder until evenly distributed. This step is crucial for the even rise of your brownies, ensuring they achieve that perfect chewy texture. Take a moment to enjoy the flour’s cloud-like appearance; it will soon join the wet ingredients.
Step 5: Combine Wet and Dry Mixtures
Gently fold the flour mixture into the peanut butter mixture using a spatula, careful not to overmix. You want to combine them until just a few streaks of flour remain visible; this will help maintain the chewy texture of your brownies. The batter should be thick and luscious, eagerly awaiting its baking destiny.
Step 6: Spread and Top
Spread the brownie batter evenly into the prepared pan, reaching all corners. Before you place them in the oven, generously top with REESE’S PIECES, pressing them down slightly so they’re nestled into the batter. This will create that delightful burst of flavor and texture in each chewy brownie bite.
Step 7: Bake to Perfection
Place the pan in your preheated oven and bake for 30-35 minutes. Keep an eye on them; when the edges appear firm and the center has a slight jiggle, they are ready. A toothpick inserted should come out with a few moist crumbs, signaling that your chewy peanut butter brownies are perfectly baked.
Step 8: Cool and Serve
Once baked, remove the brownies from the oven and let them cool in the pan for at least 30 minutes. This cooling time allows the brownies to set, making them easier to slice. Use the parchment paper to lift out the brownies, cut them into squares, and prepare to share (or keep them all for yourself)!

Make Ahead Options
These Chewy REESE’S PIECES Peanut Butter Brownies are perfect for meal prep, making your busy weeknights just a little sweeter! You can prepare the brownie batter up to 24 hours in advance; simply mix the wet and dry ingredients, then cover the bowl tightly and refrigerate. To maintain quality and avoid moisture loss, store it in an airtight container. When you’re ready to enjoy, let the mixture sit at room temperature for about 30 minutes before spreading it into the prepared pan. Top with REESE’S PIECES and bake as instructed, delivering the same chewy, mouthwatering results without the hassle of last-minute baking!
How to Store and Freeze Peanut Butter Brownies
Airtight Container: Store your brownies in an airtight container at room temperature for up to 1 week to maintain their chewy texture and flavor.
Fridge: If you live in a warmer climate, keep them in the fridge for up to 2 weeks; just let them come to room temperature before enjoying.
Freezer: For long-term storage, freeze the brownies for up to 2 months wrapped tightly in plastic wrap and aluminum foil, then thaw before serving for the best taste.
Reheating: Warm individual brownies in the microwave for 10-15 seconds for a deliciously gooey treat that feels fresh out of the oven!
Expert Tips for Chewy REESE’S PIECES Peanut Butter Brownies
Avoid Overmixing: Ensure you mix the batter only until just combined to maintain that deliciously chewy texture. Overmixing can lead to dense brownies.
Use Room Temperature Eggs: Bringing your eggs to room temperature helps them incorporate better into the batter, resulting in fluffy and moist peanut butter brownies.
Fresh Baking Powder: Check the expiration date on your baking powder for best results. Using expired baking powder can lead to brownies that don’t rise properly.
Butter Quality Matters: Opt for unsalted butter to control the salt level since you’re adding salt separately. Always melt it for a smooth blending of flavors.
Measure Accurately: Use the scoop and level method for flour to avoid excess flour, which can dry out your brownies.
Cool Before Cutting: Allow your brownies to cool in the pan for at least 30 minutes before slicing to achieve clean cuts and a delightful chewy texture.
Peanut Butter Brownies Variations & Substitutions
Feel free to let your creativity shine as you customize these brownies with delightful variations!
-
Dairy-Free: Substitute the butter with coconut oil and use a dairy-free chocolate for a rich, plant-based twist.
You’ll be amazed at how coconut oil adds a lovely flavor profile while still maintaining that decadent taste you love in chocolatey treats. -
Nut-Free: Opt for sunbutter instead of peanut butter to keep these brownies nut-free while still enjoying that creamy goodness.
This swap provides a delightful flavor that still embraces that chewy texture, perfect for those with nut allergies! -
Whole Grain: Swap half of the all-purpose flour with whole wheat flour for a healthier option without sacrificing flavor.
The nuttiness of whole wheat pairs beautifully with peanut butter, creating a more wholesome brownie that still satisfies your sweet cravings. -
Chocolate Lovers: Replace REESE’S PIECES with a mix of dark chocolate chunks and milk chocolate chips for a richer, chocolate-packed experience.
This wonderful combination will lead to a brownie that has layers of chocolate bliss, delightful for all chocolate enthusiasts! -
Extra Crunch: Fold in crushed pretzels or chopped almonds into the batter for added texture and an intriguing salty-sweet flavor.
The combination of chewy brownie and crunchy elements elevates each bite, providing a dynamic and satisfying treat. -
Spicy Kick: Mix in a teaspoon of cayenne pepper or chili powder for a surprising, yet delicious heat that complements the sweetness.
Don’t shy away—this bold move may become your new favorite twist, giving the brownies a warm, exciting flair! -
Fruity Burst: Add a handful of chopped dried cherries or cranberries to the batter! The tartness pairs beautifully with the rich peanut butter flavor.
This fruit addition not only adds pops of color but also a chewy texture that enhances the brownie experience.
If you’re in the mood for even more chocolatey goodness, check out our Cowboy Butter Chicken Bites or treat yourself to some decadent Monster Cookie Fudgy Brownies. Each suggestion opens up a world of delicious possibilities for your baking adventures!
What to Serve with Chewy REESE’S PIECES Peanut Butter Brownies
Indulging in these chewy, peanut-filled delights opens the door to endless pairing possibilities for a well-rounded dessert experience.
- Vanilla Ice Cream: The creamy sweetness of vanilla ice cream beautifully contrasts the chewy brownies, enhancing every decadent bite.
- Chocolate Sauce: A warm drizzle of rich chocolate sauce adds a luxurious touch, making each brownie even more indulgent.
- Fresh Berries: Juicy strawberries or raspberries provide a tart counterpart to the sweetness, refreshing your palate between bites.
- Salted Caramel Sauce: The buttery flavor and salty hint elevate the brownies, creating an irresistible combination that’ll have everyone reaching for more.
- Whipped Cream: Light and airy, a dollop of freshly whipped cream offers a delightful creaminess that perfectly complements the dense texture of the brownies.
- Espresso or Coffee: A rich cup of coffee, whether hot or iced, plays off the chocolate flavors, intensifying the experience while providing a cozy vibe.
- Milk: For a classic pairing, serve these brownies with a glass of cold milk; it’s a nostalgic choice that never fails to satisfy.
- Nutella Swirl: For extra indulgence, add a swirl of Nutella on top or beside your brownie; the creamy hazelnut flavor shines beside the peanut butter richness.
- Chocolate Chip Cookies: Bonus pair these brownies with a warm chocolate chip cookie for a delightful dessert platter that pleases any sweet lover.

Chewy REESE’S PIECES Peanut Butter Brownies Recipe FAQs
How do I select the ripest peanut butter for my brownies?
Absolutely! For the best flavor, choose a creamy and slightly sweet peanut butter that doesn’t have added sugars or oils. I often recommend popular brands like Jif or Skippy because they blend seamlessly into the batter. If you prefer a chunkier texture, opt for half creamy and half chunky peanut butter for delightful bites throughout your brownies.
What are the best storage methods for my brownies?
The more the merrier when it comes to storage! Keep your brownies in an airtight container at room temperature for up to 1 week. For warmer climates, storing them in the fridge can extend their freshness for about 2 weeks. Just remember to let them come back to room temperature before enjoying for that fresh-from-the-oven vibe.
Can I freeze my REESE’S PIECES Peanut Butter Brownies, and if so, how?
Yes, you can freeze them for up to 2 months! Here’s how: First, cut the brownies into squares. Wrap each piece tightly in plastic wrap, then place them in a heavy-duty freezer bag or airtight container. When you’re ready to indulge, simply thaw them at room temperature for a couple of hours or microwave for about 10-15 seconds for that warm, chewy goodness.
What should I do if my brownies come out too dry or crumbly?
If you find yourself with dry brownies, it could be due to overmixing or extra flour. Make sure to mix just until combined, and accurately measure your flour using the scoop and level method. For a future bake, also consider adding a pinch more peanut butter for moisture, or check your oven temperature, as it can vary, affecting baking times.
Are there any dietary considerations I should keep in mind when making these brownies?
Very good question! If you’re baking for someone with allergies, keep in mind that this recipe contains gluten and peanuts. You could use gluten-free flour to accommodate gluten sensitivities and experiment with almond or sunflower butter for a nut-free alternative, but this will alter the flavor slightly. Always check labels for allergens if you’re serving guests.

Melt-in-Your-Mouth Peanut Butter Brownies with REESE'S PIECES
Ingredients
Equipment
Method
- Preheat your oven to 350°F (175°C) and line an 11 x 13-inch pan with parchment paper.
- In a large mixing bowl, combine melted unsalted butter and peanut butter until smooth and creamy.
- Add granulated sugar and light brown sugar, mixing until well combined.
- Slowly beat in the eggs, one at a time, then add vanilla extract and a pinch of salt.
- In a separate bowl, whisk together all-purpose flour and baking powder until evenly blended.
- Gently fold the flour mixture into the peanut butter mixture until just combined.
- Spread the brownie batter evenly in the prepared pan and top with REESE'S PIECES, gently pressing them into the batter.
- Bake for 30-35 minutes until edges are firm and center jiggles slightly. A toothpick should come out with a few moist crumbs.
- Allow brownies to cool in the pan for at least 30 minutes before lifting out and slicing.

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