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This peanut butter brownie recipe combines two beloved flavors into one irresistible treat that never fails to please a crowd. The rich chocolate base swirled with creamy peanut butter creates that perfect balance of sweet and nutty that keeps everyone reaching for seconds.
I first made these brownies for my son's basketball team gathering and they disappeared faster than any other dessert. Now they've become our go to treat whenever we need something delicious in a hurry.
Ingredients
- 1 box peanut butter brownie mix: gives you a perfect base, any brand works well
- 4 tablespoons peanut butter: creates those gorgeous swirls, look for natural varieties for best flavor
- 1 egg: helps bind everything together, use room temperature for best results
- 2 tablespoons water: adds just the right moisture
- 2 tablespoons vegetable oil: creates that perfect fudgy texture, neutral oils work best
Step-by-Step Instructions
- Create the Batter:
- Combine brownie mix, water, egg, and oil in a mixing bowl. Use an electric mixer or whisk until perfectly smooth. This usually takes about 2 minutes and ensures no dry pockets remain in your final brownies.
- Prepare the Pan:
- Line an 8×8 inch square baking tin with parchment paper, leaving overhang on two sides for easy removal. Pour the batter evenly, making sure it reaches all corners of the pan for uniform baking.
- Add Peanut Butter:
- Drizzle the peanut butter over the batter in lines or dollops. For extra creaminess, add an additional two tablespoons beyond what the recipe calls for. The peanut butter will create beautiful marbling when swirled.
- Swirl and Bake:
- Use a knife or skewer to gently swirl the peanut butter into the brownie batter, creating a marbled effect. Bake at 320°F for 15-18 minutes until just set. A toothpick should come out with a few moist crumbs.
- Cool and Cut:
- Allow the brownies to cool completely on a wire rack before cutting. This crucial step ensures clean cuts and fully developed flavor. Once cooled, cut into 16 equal squares for perfect serving sizes.
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The secret to these brownies is in the swirling technique. My daughter discovered that using the back of a spoon creates the most beautiful ripples of peanut butter throughout the brownie batter. This little technique turned our ordinary brownies into bakery worthy treats.
The Perfect Texture Secret
Underbaking slightly is the key to achieving that coveted fudgy brownie texture. When you insert a toothpick, it should come out with a few moist crumbs still clinging to it. The brownies will continue cooking slightly as they cool and firm up to the perfect consistency. Overbaked brownies become cakey rather than fudgy, so keep a close eye on them during the final minutes of baking.
Creative Variations
These brownies serve as an excellent base for countless variations. Try adding a layer of raspberry jam beneath the peanut butter for a PB&J inspired treat. Sprinkle the top with flaky sea salt just before baking to enhance both the chocolate and peanut butter flavors. For a decadent upgrade, fold chopped Reese's peanut butter cups into the batter or press them gently into the top of the brownies immediately after baking.
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Serving Suggestions
Transform these brownies into an elegant dessert by warming slightly and serving with a scoop of vanilla ice cream and a drizzle of warm chocolate sauce. For a fun party presentation, cut them into bite sized pieces and place on a platter with fresh berries and mint leaves. They also make an excellent base for brownie sundaes topped with whipped cream, crushed peanuts, and a cherry.
Frequently Asked Questions
- → How do I ensure the batter is smooth?
Mix the ingredients thoroughly until the batter is lump-free. Use a whisk or an electric mixer for the best results.
- → Can I use regular brownie mix?
Yes, regular brownie mix works fine. Add extra peanut butter to enhance the flavor.
- → How do I create a marbled effect?
Swirl the peanut butter into the brownie batter using a knife or spoon. Avoid overmixing to keep the swirls distinct.
- → What add-ins work well with these brownies?
Consider adding chocolate chips, peanut butter chips, or chopped nuts for extra texture and flavor.
- → How do I store these brownies?
Store in an airtight container at room temperature for up to 4 days, refrigerate for a week, or freeze for up to 3 months.
- → What is the best way to cut brownies cleanly?
Let the brownies cool completely, then use a sharp knife wiped clean after each cut to achieve clean slices.