If you love rich chocolate and creamy peanut butter, get ready for a treat! Today, I’ll show you how to make delicious Chocolate Peanut Butter Swirl Brownies. These brownies are easy to make and so satisfying to eat. I’ll guide you through the ingredients, steps, and tips to make your brownies perfect. Whether you want a sweet snack or a dessert for guests, these brownies are sure to impress! Let’s dive in!
Why I Love This Recipe
- Decadent Flavor Combination: The rich chocolate paired with creamy peanut butter creates an irresistible taste that keeps you coming back for more.
- Easy to Make: This recipe comes together quickly and doesn’t require any special equipment, making it perfect for bakers of all skill levels.
- Perfect for Sharing: With 12 servings, these brownies are ideal for parties, potlucks, or simply treating friends and family.
- Customizable: Add extra chocolate chips or nuts to personalize your brownies and make them even more delightful!
Ingredients
List of Ingredients
– 1 cup unsalted butter, melted
– 2 cups granulated sugar
– 4 large eggs
– 1 teaspoon vanilla extract
– 1 cup all-purpose flour
– 1 cup unsweetened cocoa powder
– 1/2 teaspoon salt
– 1/2 teaspoon baking powder
– 1/2 cup creamy peanut butter
– 1/4 cup chocolate chips (optional)
Key Ingredient Descriptions
– Unsalted Butter: I use unsalted butter for better control of salt in the brownies.
– Granulated Sugar: This sweetens the brownies and helps with texture.
– Eggs: They add moisture and help the brownies rise, making them soft.
– Vanilla Extract: It gives the brownies a warm, sweet flavor.
– All-Purpose Flour: This provides structure to the brownies.
– Unsweetened Cocoa Powder: It gives the brownies a rich chocolate flavor.
– Salt: Just a bit enhances all the flavors in the brownies.
– Baking Powder: It helps the brownies rise a bit, making them fluffy.
– Creamy Peanut Butter: This adds a rich, nutty taste and makes the swirl.
– Chocolate Chips: Optional, but they add even more chocolatey goodness.
Substitutions for Dietary Preferences
– Butter: For a dairy-free option, use coconut oil or vegan butter.
– Sugar: You can swap granulated sugar with coconut sugar for a healthier choice.
– Eggs: Use flax eggs (1 tablespoon flaxseed meal + 2.5 tablespoons water per egg) to make it vegan.
– Flour: Almond flour or gluten-free flour can work for gluten-free brownies.
– Peanut Butter: Sunflower seed butter is a great nut-free alternative.

Step-by-Step Instructions
Preparing the Oven and Baking Pan
First, you need to preheat your oven to 350°F (175°C). This step is key for even baking. While the oven heats, grab a 9×13 inch baking pan. Grease it well or line it with parchment paper. This will help you remove the brownies easily later.
Mixing Wet Ingredients
In a large mixing bowl, combine 1 cup of melted butter and 2 cups of granulated sugar. Stir the mix until it feels smooth and well combined. This forms the base of your brownie batter and adds sweetness.
Incorporating Eggs and Vanilla
Add 4 large eggs into the butter-sugar mix, one at a time. Make sure you mix well after each egg. This step adds moisture and richness. Finally, stir in 1 teaspoon of vanilla extract. This gives the brownies a warm, inviting flavor.
Combining Dry Ingredients
In another bowl, whisk together 1 cup of all-purpose flour, 1 cup of cocoa powder, 1/2 teaspoon of salt, and 1/2 teaspoon of baking powder. This mix provides structure and flavor. Gradually add it to the wet ingredients. Mix until just combined. If you want extra chocolate, fold in 1/4 cup of chocolate chips.
Preparing the Batter and Swirling Peanut Butter
Pour the brownie batter into your prepared baking pan. Use a spatula to spread it evenly. Next, melt 1/2 cup of creamy peanut butter in a small bowl. Heat it for 20-30 seconds in the microwave. Be careful not to overheat! Drizzle the warm peanut butter over the brownie batter. Use a knife to swirl it into the batter, creating a beautiful marbled design.
Baking and Cooling the Brownies
Place the pan in your preheated oven and bake for 25-30 minutes. To check if they’re done, insert a toothpick into the center. It should come out mostly clean with a few moist crumbs. Once baked, take the brownies out and let them cool in the pan for at least 15 minutes before slicing them into squares.
Tips & Tricks
Achieving the Perfect Swirl
To get that lovely swirl, warm the peanut butter first. Heat it for about 20-30 seconds in the microwave. This makes it easier to drizzle on the brownie batter. Drizzle the peanut butter over the top, then use a knife to swirl it in. Don’t overmix! You want to see the peanut butter and chocolate batter blend, but not disappear.
Baking Time Adjustments
Baking times can vary. Your oven may not be the same as mine. Start checking the brownies at 25 minutes. If a toothpick comes out mostly clean with a few moist crumbs, they are done. If you see wet batter on the toothpick, give it a few more minutes.
Testing for Doneness
To test for doneness, insert a toothpick in the center of the brownies. It should come out with some moist crumbs, not wet batter. If it comes out clean, the brownies might be overbaked. Always let them cool for at least 15 minutes before slicing. This helps them set. Enjoy!
Pro Tips
- Use Room Temperature Ingredients: For a smoother batter, ensure that your eggs are at room temperature before adding them to the mixture. This helps them to incorporate better into the batter.
- Don’t Overmix the Batter: Mix the brownie batter just until the dry ingredients are combined. Overmixing can lead to dense brownies instead of the desired fudgy texture.
- Check for Doneness Carefully: Avoid overbaking by checking your brownies a few minutes before the suggested baking time. A toothpick should come out with a few moist crumbs for a perfect fudgy brownie.
- Let Them Cool: Allow the brownies to cool in the pan for at least 15 minutes before slicing. This helps them set and makes for cleaner cuts.
Variations
Add-Ins for Extra Flavor
You can make these brownies even better with fun add-ins. A handful of chocolate chips adds more chocolatey goodness. You can also mix in chopped nuts, like walnuts or pecans, for a nice crunch. Want a fruity twist? Try adding chopped cherries or raspberries. These add-ins give your brownies a unique taste and texture.
Gluten-Free Option
If you want gluten-free brownies, swap out the all-purpose flour. Use an equal amount of gluten-free flour blend. This blend works well in most recipes. Just check that it has xanthan gum, which helps bind the ingredients. Your brownies will still be rich and tasty, just without gluten.
Vegan Adaptation
To make vegan brownies, you can replace eggs with flaxseed meal. Mix one tablespoon of flaxseed meal with three tablespoons of water. Let it sit for five minutes until it thickens. For butter, use coconut oil or a plant-based butter. These swaps keep the brownies moist and delicious. Your vegan friends will love these brownies just as much!
Storage Information
Best Ways to Store Leftover Brownies
To keep your brownies fresh, store them in an airtight container. You can layer parchment paper between each brownie to prevent sticking. Place the container in a cool, dry place. If you do this, they can last up to a week. For even longer storage, consider options below.
Freezing Instructions
You can freeze leftover brownies for later enjoyment. First, let the brownies cool completely. Cut them into squares and wrap each piece tightly in plastic wrap. Then, place the wrapped brownies in a freezer-safe bag or container. They can stay good in the freezer for up to three months. When you crave a brownie, just take one out and let it thaw at room temperature.
Reheating for Maximum Freshness
To enjoy your brownies warm, you can easily reheat them. Preheat your oven to 350°F (175°C). Place the brownies on a baking sheet and cover them with foil. Heat for about 10 to 15 minutes. This will help restore that fresh-baked taste and texture. If you’re in a hurry, you can use the microwave. Heat a single brownie for about 10 to 15 seconds. Enjoy that gooey goodness!
FAQs
Can I use crunchy peanut butter?
Yes, you can use crunchy peanut butter. It adds a nice texture. The bits of peanuts give a fun crunch in each bite. If you love a bit of extra bite, go for it! Just keep in mind that the swirl may not be as smooth.
How do I know when the brownies are done?
To check for doneness, insert a toothpick into the center. If it comes out with a few moist crumbs, they are done. If it comes out wet with batter, they need more time. Bake them for 25-30 minutes but watch them closely. Oven times can vary.
What can I serve with chocolate peanut butter swirl brownies?
These brownies pair well with vanilla ice cream. The cold creaminess balances the rich chocolate. You can also top them with extra peanut butter or crushed peanuts for more flavor. Whipped cream or fresh berries work too!
You learned about making chocolate peanut butter swirl brownies. We covered key ingredients and ways to adjust for diets. I shared step-by-step instructions to help you bake perfectly. Tips on swirling and testing for doneness ensure great results. Variations expand your options, whether gluten-free or vegan. Proper storage keeps your brownies fresh. Enjoy baking these delicious treats, and don’t hesitate to experiment with flavors! Your creations will be a hi