Peanut Butter Swirl Brownies

Highlighted under: Artisan Bakery Recipes

I can't resist the combination of rich chocolate and creamy peanut butter, and these Peanut Butter Swirl Brownies hit the spot every time. When I first tried making these, I was amazed at how easy it was to create such an indulgent dessert. The gooey brownie base paired with swirls of peanut butter creates a delightful contrast of flavors. I've made these for gatherings and as an everyday treat, and they never fail to impress. Trust me, once you take a bite, you’ll understand why this recipe is a favorite in my kitchen.

Emily

Created by

Emily

Last updated on 2026-01-08T11:33:28.473Z

When I first attempted these Peanut Butter Swirl Brownies, I used my go-to brownie recipe as a base. The addition of peanut butter not only enhanced the flavor but also created beautiful swirls that made each piece visually appealing. The secret to getting those perfect swirls is to drop spoonfuls of peanut butter on top and use a knife to create a marbled effect. It’s easy and so satisfying!

I’ve also experimented with different types of chocolate in the brownie base, and each variation was delicious. Using dark chocolate really amplifies the brownie flavor and pairs wonderfully with the sweetness of the peanut butter. Remember to let them cool before cutting; it's tough, but it’s worth it!

Why You Will Love This Recipe

  • Rich chocolate flavor paired with creamy peanut butter
  • Gooey texture that melts in your mouth
  • Perfect for satisfying sweet cravings any day

Mastering the Texture

Achieving the perfect gooey texture in these brownies is all about timing. When you bake them for about 25 minutes, you’ll notice the edges start to pull away from the pan, which is a great sign. Stick a toothpick in the center too—if it comes out with a few moist crumbs, your brownies are just right. Underbaking slightly is recommended, as they will continue to set up a bit as they cool.

The combination of unsweetened cocoa powder and all-purpose flour provides the rich chocolatey flavor while ensuring the structure isn’t too dense. The melted butter plays a crucial role, giving a fudgy consistency, so be careful not to let it cool too much before mixing it with the sugar, as it needs to emulsify smoothly.

Peanut Butter Swirl Tips

When mixing the peanut butter with confectioners' sugar, this step not only sweetens but also brings a creamy texture, allowing it to swirl easily into the brownie batter. If your peanut butter is too thick, warming it slightly in the microwave for about 10-15 seconds can make it easier to work with. Just be careful not to overheat it; you want it warm, not hot.

For a nut-free version, consider using sunflower seed butter instead of peanut butter. The process remains the same, and you'll still enjoy a delightful swirl that complements the brownies beautifully.

Ingredients

Brownie Base

  • 1/2 cup unsalted butter, melted
  • 1 cup granulated sugar
  • 2 large eggs
  • 1 teaspoon vanilla extract
  • 1/3 cup unsweetened cocoa powder
  • 1/2 cup all-purpose flour
  • 1/4 teaspoon salt

Peanut Butter Swirl

  • 1/2 cup creamy peanut butter
  • 1/4 cup confectioners' sugar

Instructions

Preheat the Oven

Preheat your oven to 350°F (175°C) and grease an 8x8-inch baking pan.

Make the Brownie Batter

In a mixing bowl, combine the melted butter and granulated sugar. Mix well, then add the eggs and vanilla, stirring until smooth. Sift in the cocoa powder, flour, and salt, mixing until just combined.

Prepare the Peanut Butter Swirl

In a separate bowl, mix the creamy peanut butter with confectioners' sugar until smooth.

Combine and Swirl

Pour the brownie batter into the prepared pan and drop spoonfuls of the peanut butter mixture on top. Use a knife to swirl the peanut butter into the brownie batter.

Bake

Bake in the preheated oven for 25 minutes, or until a toothpick inserted comes out with a few moist crumbs.

Cool and Serve

Let the brownies cool in the pan for at least 10 minutes before cutting into squares and serving.

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Pro Tips

  • For an extra touch, you can sprinkle some chopped peanuts on top before baking. This adds a delightful crunch to the creamy brownies.

Storage and Make-Ahead

These brownies can be made a few days ahead of time, which makes them perfect for gatherings or busy weeknight treats. Once they are completely cooled, store them in an airtight container at room temperature for up to 4 days. For longer storage, wrap them tightly in plastic wrap and freeze for up to 3 months. Just make sure to thaw them at room temperature before serving for the best texture.

If you want to add a bit of flair, consider drizzling melted chocolate or additional peanut butter on top right before serving. This not only enhances the flavor but gives your brownies a beautiful finish.

Troubleshooting Common Issues

If your brownies appear too crumbly, it may be due to overbaking. Aim for that perfect moist crumb test with the toothpick; remember, they should be slightly gooey in the middle. If you find that they are too sticky, it could be due to underbaking or using too much peanut butter that wasn't swirled adequately throughout the batter.

To prevent the brownies from sticking to the pan, ensure you grease it generously, or consider lining it with parchment paper. This small step can save you from potential heartbreak when trying to serve these decadent treats!

Questions About Recipes

→ Can I use crunchy peanut butter instead?

Absolutely! Crunchy peanut butter will add texture to the brownies.

→ How should I store these brownies?

Store them in an airtight container at room temperature for up to 4 days, or refrigerate them for up to a week.

→ Can I freeze these brownies?

Yes, you can freeze them! Just wrap individual brownies in plastic wrap and place them in a freezer bag.

→ What can I substitute for eggs if I want a vegan version?

You can use flax eggs or applesauce as a substitute for the eggs in this recipe.

Peanut Butter Swirl Brownies

I can't resist the combination of rich chocolate and creamy peanut butter, and these Peanut Butter Swirl Brownies hit the spot every time. When I first tried making these, I was amazed at how easy it was to create such an indulgent dessert. The gooey brownie base paired with swirls of peanut butter creates a delightful contrast of flavors. I've made these for gatherings and as an everyday treat, and they never fail to impress. Trust me, once you take a bite, you’ll understand why this recipe is a favorite in my kitchen.

Prep Time15 minutes
Cooking Duration25 minutes
Overall Time40 minutes

Created by: Emily

Recipe Type: Artisan Bakery Recipes

Skill Level: Beginner

Final Quantity: 12 servings

What You'll Need

Brownie Base

  1. 1/2 cup unsalted butter, melted
  2. 1 cup granulated sugar
  3. 2 large eggs
  4. 1 teaspoon vanilla extract
  5. 1/3 cup unsweetened cocoa powder
  6. 1/2 cup all-purpose flour
  7. 1/4 teaspoon salt

Peanut Butter Swirl

  1. 1/2 cup creamy peanut butter
  2. 1/4 cup confectioners' sugar

How-To Steps

Step 01

Preheat your oven to 350°F (175°C) and grease an 8x8-inch baking pan.

Step 02

In a mixing bowl, combine the melted butter and granulated sugar. Mix well, then add the eggs and vanilla, stirring until smooth. Sift in the cocoa powder, flour, and salt, mixing until just combined.

Step 03

In a separate bowl, mix the creamy peanut butter with confectioners' sugar until smooth.

Step 04

Pour the brownie batter into the prepared pan and drop spoonfuls of the peanut butter mixture on top. Use a knife to swirl the peanut butter into the brownie batter.

Step 05

Bake in the preheated oven for 25 minutes, or until a toothpick inserted comes out with a few moist crumbs.

Step 06

Let the brownies cool in the pan for at least 10 minutes before cutting into squares and serving.

Extra Tips

  1. For an extra touch, you can sprinkle some chopped peanuts on top before baking. This adds a delightful crunch to the creamy brownies.

Nutritional Breakdown (Per Serving)

  • Calories: 380 kcal
  • Total Fat: 26g
  • Saturated Fat: 15g
  • Cholesterol: 195mg
  • Sodium: 85mg
  • Total Carbohydrates: 32g
  • Dietary Fiber: 3g
  • Sugars: 24g
  • Protein: 6g