With the aroma of freshly baked brownies wafting through the kitchen, I can feel my heart race in tune with my sweet tooth. These Peanut Butter Brownie Bars are a delightful fusion of rich chocolate and creamy peanut butter, making them the easiest way to elevate your dessert game. Not only do they come together in no time, but their irresistible collaboration of flavors will make them an all-time favorite at gatherings or cozy nights in. Topped with a luscious layer of peanut butter buttercream frosting, these bars are a true treat that straddles the line between indulgent and comforting. Can you imagine the smiles as you slice into these fudgy delights? Ready to dive into this sweet adventure?
Why are Peanut Butter Brownie Bars Irresistible?
Decadent Flavor: The combination of rich chocolate and creamy peanut butter creates a taste explosion that will have you coming back for seconds.
Time-Saving Delight: These bar cookies come together quickly, so you can satisfy your sweet cravings without spending hours in the kitchen.
Crowd Pleaser: Perfect for gatherings or cozy nights in, they are sure to impress family and friends—and keep them coming back for more!
Easily Customizable: Feel free to experiment by adding nuts or swapping the Reese’s peanut butter chips for your favorite chocolate.
Ultimate Comfort Food: The fudgy texture combined with a smooth buttercream frosting makes each bite a comforting hug for your taste buds. Try serving them warm with a scoop of vanilla ice cream for a delightful treat! If you’re a fan of decadent desserts, you might also love my Butterscotch Bars Trisha or Brownie Baked Alaska.
Peanut Butter Brownie Bars Ingredients
For the Brownies
• Ghirardelli Double Chocolate Brownie Mix – Provides a rich chocolate flavor; feel free to use your favorite brand if you have one.
• Eggs – Binds ingredients for the perfect fudgy texture; follow the instructions on the brownie mix package for the right amount.
• Oil – Ensures moist brownies; be sure to use the amount listed on the brownie mix package for best results.
• Reese’s Peanut Butter Chips – Adds delightful bursts of peanut butter flavor; regular peanut butter can be used as a substitution if you’re in a pinch.
For the Topping
• Semi-Sweet Chocolate Chips – Optional drizzle for added decadence; melt them for a luxurious finish.
• Best Peanut Butter Buttercream Frosting – Provides a creamy, sweet layer that perfectly complements the brownies; check out the separate recipe for this delicious frosting.
With these ingredients on hand, you’ll be ready to craft the ultimate Peanut Butter Brownie Bars that everyone will adore!
Step‑by‑Step Instructions for Peanut Butter Brownie Bars
Step 1: Prepare the Brownie Batter
Begin by preheating your oven to 350°F (175°C). In a large mixing bowl, combine the Ghirardelli Double Chocolate Brownie Mix, eggs, and oil as directed on the package. Stir in 1 cup of Reese’s Peanut Butter Chips, ensuring they are evenly distributed throughout the thick batter for that delicious peanut butter flavor.
Step 2: Bake the Brownies
Pour the brownie batter into a greased 13″ x 9″ baking pan, spreading it evenly into the corners. Place the pan in the preheated oven and bake according to the instructions on the package, usually around 25-30 minutes. The brownies are done when a toothpick inserted in the center comes out with moist crumbs. Once baked, remove them from the oven and allow to cool completely on a wire rack.
Step 3: Make the Frosting
While your Peanut Butter Brownie Bars cool, it’s the perfect time to prepare the Best Peanut Butter Buttercream Frosting. In a mixing bowl, beat together softened butter, creamy peanut butter, powdered sugar, and a splash of milk until smooth and fluffy. Aim for a thick yet spreadable consistency that will beautifully complement your brownies.
Step 4: Frost the Brownies
Once your brownies have cooled completely, generously spread the prepared peanut butter buttercream frosting over the top using an offset spatula. Make sure to cover all corners and edges for an extra indulgent treat. The rich frosting will add a delightful sweetness that balances the chocolatey base of the Peanut Butter Brownie Bars.
Step 5: Drizzle with Chocolate (Optional)
If you choose to add a luxurious touch, melt semi-sweet chocolate chips in a microwave-safe bowl or in a double boiler. Once melted, transfer the chocolate to a plastic bag, snip the corner, and drizzle it over the frosted brownies. Allow the melted chocolate to cool and harden at room temperature before cutting your bars into squares.
Step 6: Serve and Enjoy
Slice the Peanut Butter Brownie Bars into squares and serve them on a platter, showcasing their delightful layers. They’re perfect on their own or served warm with a scoop of vanilla ice cream. Whether it’s a family gathering or a cozy night in, these decadent bars will surely bring smiles all around!
How to Store and Freeze Peanut Butter Brownie Bars
Room Temperature: Keep the brownie bars in an airtight container for up to 3 days at room temperature. This helps preserve their moist, fudgy texture.
Fridge: For longer freshness, you can refrigerate the bars in an airtight container where they will stay delicious for up to 1 week.
Freezer: To freeze, wrap individual portions in plastic wrap and place them in a freezer-safe bag. They can be stored for up to 3 months.
Reheating: When ready to enjoy, thaw the Peanut Butter Brownie Bars in the refrigerator overnight or at room temperature for a couple of hours. Warm them slightly in the microwave for an extra gooey treat!
What to Serve with Peanut Butter Brownie Bars
Elevate your dessert experience with delightful accompaniments that harmonize beautifully with these sweet bars.
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Vanilla Ice Cream: A scoop of creamy vanilla ice cream adds a refreshing contrast to the rich, fudgy brownie. The cold temperature complements the warm bars, creating a heavenly bite.
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Fresh Berries: Juicy strawberries or raspberries provide a burst of tartness that cuts through the sweetness, refreshing your palate with every bite.
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Coffee: A steaming cup of coffee pairs perfectly with these dessert bars, enhancing the chocolate flavors and creating a cozy atmosphere for indulgence.
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Milkshake: Blend up a peanut butter milkshake for an extra treat! The creamy texture and familiar flavor will make each bite of brownie even more decadent.
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Whipped Cream: Light and airy whipped cream on top adds a lovely finish, making your Peanut Butter Brownie Bars feel extra special. It’s a simple yet delightful touch.
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Chocolate Drizzle: Intensify the chocolate experience by drizzling melted chocolate over the bars. This extra layer of richness will make them a true showstopper.
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Chopped Nuts: Sprinkling some crushed nuts, like walnuts or pecans, adds a nice crunch and an earthy flavor that contrasts beautifully with the sweet bars.
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Chocolate Milk: For a nostalgic treat, serve with a glass of chocolate milk to amplify the chocolate experience. This kid-friendly pairing will bring a smile to everyone’s face.
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Tea: A cup of herbal tea, especially chai or peppermint, can offer a soothing balance to the sweetness of the brownies while enhancing the overall dessert experience.
Peanut Butter Brownie Bars Variations
Feel free to customize your delicious Peanut Butter Brownie Bars and take them to new delicious heights!
- Milk Chocolate Chips: Substitute peanut butter chips with milk chocolate chips for a sweeter, creamier twist. They’ll bring a smile to any chocolate lover’s face!
- Chopped Nuts: Add a crunch by folding in chopped walnuts or pecans. This extra texture elevates the eating experience and adds a delightful surprise in every bite!
- Cookie Crumble Topping: Crumble your favorite chocolate chip cookies over the frosting for an extra layer of decadence. It’s a cookie-and-brownie fusion that your family will love!
- Spicy Kick: Mix a pinch of cayenne pepper or red pepper flakes into the brownie batter for a surprising hint of heat. This sweet-and-spicy combination will surely intrigue your taste buds!
- Sugar-Free Option: Use a sugar-free brownie mix and sugar-free peanut butter chips for a treat that’s guilt-free without sacrificing flavor. Delicious doesn’t have to mean indulgent!
- Peanut Butter Swirl: Before baking, swirl additional peanut butter into the brownie batter for an irresistible creamy aspect that pairs beautifully with the frosting. Each bite will be an exciting adventure!
- Fruity Delight: Add diced strawberries or banana slices on top of the frosting before serving. The fruity freshness contrasts delightfully with the rich chocolate base!
- Brown Butter Infusion: Incorporate brown butter into the brownie mix for an enhanced depth of flavor. The nutty notes perfectly complement the sweetness of peanut butter!
For more enchanting concoctions, you may enjoy my Blueberry Buttermilk Breakfast or the indulgent Brown Butter Sage recipe to explore a variety of flavors!
Expert Tips for Peanut Butter Brownie Bars
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Cooling Time Matters: Allow brownies to cool completely before frosting; this prevents the frosting from melting and keeps the layers intact.
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Quality Counts: Use high-quality chocolate chips for the best flavor. It makes a significant difference in your Peanut Butter Brownie Bars.
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Layer Generously: Don’t skimp on the frosting! A thick layer enhances the overall indulgence, giving a delightful contrast to the fudgy brownie base.
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Drizzling Tips: When drizzling melted chocolate, let it cool slightly before drizzling to maintain shape and avoid too much run-off on the edges.
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Storage Secrets: For maximum freshness, store bars in an airtight container at room temperature for up to 3 days or in the fridge for extended shelf life.
Make Ahead Options
These Peanut Butter Brownie Bars are perfect for meal prep enthusiasts! You can bake the brownies and cool them up to 3 days in advance, storing them in an airtight container at room temperature. Feel free to prepare the peanut butter buttercream frosting up to 24 hours ahead; simply refrigerate it and allow it to come to room temperature before spreading. To maintain quality, avoid frosting the brownies until just before serving to prevent sogginess. When you’re ready to indulge, generously frost the cooled brownies and, if desired, add a drizzle of melted chocolate for that extra touch of decadence. Enjoy the time-saving convenience of these delicious bars without compromising flavor!
Peanut Butter Brownie Bars Recipe FAQs
How do I choose ripe ingredients?
Absolutely! When selecting peanut butter, opt for a creamy or natural variety that suits your taste preference for a smoother texture. For the brownie mix, check the expiration date and ensure the package is intact. If using eggs, pick ones without cracks and ideally fresh from the grocery store.
How should I store the Peanut Butter Brownie Bars?
These delicious bars can be stored in an airtight container at room temperature for up to 3 days. If you’d like them to last longer, refrigerate them in a sealed container for up to a week. Just be sure to let them cool completely before storing to maintain that perfect fudgy texture!
Can I freeze Peanut Butter Brownie Bars?
Yes, you can absolutely freeze these treat bars! Once they are completely cool, wrap individual pieces tightly in plastic wrap or aluminum foil, then place them in a freezer-safe bag. They’ll keep well for up to 3 months. When you’re ready to indulge, simply thaw them in the fridge overnight or leave them at room temperature for a couple of hours. If you want that fresh-baked feeling, warm them slightly in the microwave!
What if my brownies are too crumbly?
Very! If your brownies turn out crumbly, it might be due to overbaking or not enough moisture in the batter. Make sure to follow the baking time closely—check around the suggested time by the package. For the next batch, you can add a little extra oil to the mix to enhance moisture. Watching for those moist crumbs on the toothpick test is key!
Are these Peanut Butter Brownie Bars safe for pets or those with allergies?
These bars contain ingredients like chocolate and peanut butter, which are not safe for pets, particularly dogs. Additionally, if you or someone you’re serving has allergies, be cautious with peanut butter and any other nuts or chocolates included. Always check ingredient labels, and don’t hesitate to swap in allergy-friendly ingredients if needed!
Can I make these bars in advance?
Of course! Peanut Butter Brownie Bars can be made a day ahead of your event. Just prepare and frost them, then store in an airtight container until you’re ready to serve. This will actually help the flavors meld together beautifully!
Irresistible Peanut Butter Brownie Bars with Creamy Frosting
Ingredients
Equipment
Method
- Preheat your oven to 350°F (175°C). In a large mixing bowl, combine the brownie mix, eggs, and oil. Stir in the peanut butter chips.
- Pour the brownie batter into a greased 13" x 9" baking pan and bake according to the package instructions for 25-30 minutes.
- While the brownies cool, prepare the peanut butter buttercream frosting by beating together softened butter, peanut butter, powdered sugar, and milk until smooth.
- Once cooled, spread the frosting generously over the brownies.
- Melt semi-sweet chocolate chips and drizzle over the frosted brownies. Allow to cool and harden before cutting.
- Slice the bars, serve, and enjoy!
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