Craving a sweet treat that combines rich chocolate and creamy peanut butter? Look no further! In this post, I'll show you how to make Peanut Butter Swirl Brownies—an irresistible dessert perfect for any time. These brownies are simple to make and provide a delightful twist to classic chocolate. Get ready to impress your friends and family with this easy, delicious recipe you’ll want to make again and again!
Why I Love This Recipe
- Decadent Flavor Combination: The rich chocolate brownie pairs perfectly with the creamy peanut butter, creating a dessert that’s both indulgent and satisfying.
- Easy to Make: This recipe requires simple ingredients and minimal steps, making it perfect for both beginner and experienced bakers.
- Customizable: Add-ins like chocolate chips or nuts can be easily incorporated, allowing you to personalize the brownies to your taste.
- Always a Crowd-Pleaser: These brownies are sure to impress at gatherings, making them a go-to recipe for parties and potlucks.
Ingredients
To make Peanut Butter Swirl Brownies, you'll need these simple ingredients:
- 1 cup unsalted butter
- 2 cups granulated sugar
- 1 tablespoon vanilla extract
- 4 large eggs
- 1 cup all-purpose flour
- 1 cup unsweetened cocoa powder
- 1 teaspoon baking powder
- 1/2 teaspoon salt
- 1/2 cup creamy peanut butter
- 1/4 cup chocolate chips (optional)
These ingredients work together to create rich, fudgy brownies with a creamy peanut butter twist. The butter adds moisture and flavor, while the sugar sweetens the mix. Eggs provide structure and richness. Flour and cocoa powder form the base, while baking powder helps them rise.
Peanut butter gives that delicious swirl and nutty taste. If you want extra chocolate goodness, you can add chocolate chips. Each ingredient plays a key role in making these brownies a treat you can't resist!

Step-by-Step Instructions
Preheat and Prepare
First, set your oven to 350°F (175°C). While it heats, grab a 9x13-inch baking pan and grease it well. This step helps the brownies slide out easily when they cool.
Melt and Mix
Next, take a medium saucepan and melt 1 cup of unsalted butter over low heat. Once it melts, remove it from the heat. Stir in 2 cups of granulated sugar and 1 tablespoon of vanilla extract. Mix it well until everything blends nicely.
Add Eggs and Dry Ingredients
Now, add 4 large eggs to the mixture. Add them one by one, stirring well after each. In another bowl, combine 1 cup of all-purpose flour, 1 cup of unsweetened cocoa powder, 1 teaspoon of baking powder, and 1/2 teaspoon of salt. Gradually add this dry mix to the butter mixture. Stir gently until just combined. Avoid overmixing to keep the brownies soft.
Prepare Peanut Butter Swirl
In a microwave-safe bowl, heat 1/2 cup of creamy peanut butter for about 30 seconds to 1 minute. It should be smooth. Once warm, dollop the peanut butter over the brownie batter. Use a knife or skewer to gently swirl the peanut butter into the brownie mix. This creates a lovely marbled effect.
Bake and Cool
Pour the brownie batter into the prepared pan, spreading it evenly. If you want, sprinkle 1/4 cup of chocolate chips on top for extra flavor. Bake in the oven for 25 to 30 minutes. Check doneness by inserting a toothpick; it should come out with a few moist crumbs. After baking, let the brownies cool in the pan for at least 15 minutes before cutting them into squares.
Tips & Tricks
Baking Tips
Mixing is key for great brownies. To avoid overmixing, combine ingredients gently. After adding the dry mix, stir until you see no flour. This keeps the brownies soft and chewy. Use a rubber spatula for easy mixing. Remember, lumps are okay!
Swirling Technique
Creating a nice marble effect with peanut butter takes practice. First, heat the peanut butter until it's smooth. Then, dollop it on top of the brownie batter. Use a knife to swirl gently. Don’t dig too deep; just skim the surface. This keeps the layers distinct and beautiful.
Presentation Tips
Serving your brownies well adds to the fun. Use a colorful plate to make them pop. Drizzle extra melted peanut butter or chocolate on top for flair. A sprinkle of sea salt enhances flavor too. Cut them into squares for easy sharing.
Pro Tips
- Use Room Temperature Ingredients: Allow your eggs and butter to come to room temperature before mixing. This helps create a smoother batter and ensures even baking.
- Don't Overmix the Batter: When combining dry and wet ingredients, mix just until combined. Overmixing can lead to dense and tough brownies.
- Check for Doneness: Insert a toothpick into the center of the brownies; it should come out with a few moist crumbs. If it comes out clean, the brownies may be overcooked.
- Let Them Cool: Allow the brownies to cool in the pan for at least 15 minutes before cutting. This helps them set and makes it easier to cut into perfect squares.
Variations
Nutty Add-Ins
You can add nuts or seeds to your brownies for extra crunch. Chopped walnuts, pecans, or almonds work great. You can also use sunflower seeds for a fun twist. Just fold in about half a cup after mixing the batter. This gives your brownies a nice texture and a nutty flavor that pairs well with peanut butter.
Alternative Sweeteners
If you want to cut back on sugar, try using honey, maple syrup, or stevia. Each of these will change the taste a bit. If you use a liquid sweetener like honey, reduce the other liquids in the recipe by a tablespoon. For stevia, check the package for the right amount to use. These swaps can make your brownies healthier without losing sweetness.
Chocolate Flavors
You can switch up the chocolate types for new flavors. Dark chocolate gives a rich taste, while white chocolate adds sweetness. You can even mix different chocolates together for a fun flavor burst. Just replace some cocoa powder with your chosen chocolate. This can lead to delightful and unique peanut butter swirl brownies every time!
Storage Info
Storing Brownies
To keep your brownies fresh, store them in an airtight container. Line the container with parchment paper for easy removal. Place the brownies in a single layer if you can. If you have to stack them, put parchment paper between layers. This helps avoid sticking. Keep the container at room temperature for up to four days. For longer storage, consider freezing.
Freezing Instructions
To freeze brownies, first let them cool completely. Cut them into squares. Wrap each square tightly in plastic wrap. Then, place the wrapped brownies in a freezer-safe bag or container. Label the container with the date. You can freeze them for up to three months. When you are ready to eat, just thaw them in the fridge or at room temperature.
Reheating Tips
To reheat brownies, use the microwave for a quick fix. Place a square on a microwave-safe plate. Heat on low power for about ten seconds. Check if it’s warm enough. If not, heat in short bursts of five seconds until ready. This method keeps the texture soft and moist. Avoid overheating, as this can make them dry.
FAQs
How do I know when brownies are done baking?
To test if your brownies are done, use a toothpick. Insert it into the center of the brownies. If it comes out with a few moist crumbs, they are ready. If it comes out wet with batter, bake them a bit longer. You want a slight stickiness but not gooey.
This method gives you a clear sign. Brownies can continue cooking a bit after you take them out. So, keep this in mind when checking. The edges should look set, while the center may be a bit soft.
Can I substitute peanut butter with another spread?
Yes, you can use other spreads. Nut butters like almond or cashew work well. Each will change the flavor a bit. For a sweet twist, try Nutella or cookie butter.
Keep in mind that these spreads can be thicker or thinner than peanut butter. This might affect how they swirl into the batter. Test small amounts to see how they blend in.
What can I do with leftover brownies?
Leftover brownies can be a delicious treat in many ways. You can cut them into squares and serve with ice cream. This creates a fun brownie sundae.
You can also crumble them over yogurt or mix them into milkshakes for extra flavor. Another idea is to make brownie truffles by rolling them into balls and dipping them in chocolate. This way, you can enjoy them in new ways!
You learned how to make delicious brownies with a peanut butter swirl. We covered the list of ingredients, easy steps, and tips for great results. You also discovered fun variations and smart storage ideas. Whether you enjoy them plain or jazz them up, brownies can fit any taste. Keep this guide handy for your next baking adventure. Enjoy your sweet creations!