Peanut Butter Swirled Brownies

I’m not gonna lie. I was more than a little excited about all of your reactions to Chocolate Peanut Butter Week.

You guys like your chocolate peanut butter treats! Just like me! We must be soul mates! Want to get married? I’ll cook, you clean!

Actually, yes. Let’s do that. My current spousal situation doesn’t involve any teamwork in the cooking and cleaning department. Apparently, just because he works 70+ hours per week, he thinks I should take care of things on the home front.

He’s lame, you guys. I’d like to upgrade my husband to a wife. Any takers?

We can have these brownies in lieu of wedding cake. They are super rich, fudgy, and dense. The peanut butter swirl is purrrrrrfect. Like a peanut butter ball atop a brownie.


Peanut Butter Swirled Brownies

Prep Time
15 mins
Cook Time
35 mins
Total Time
50 mins
Servings: 12
Course: Dessert
Cuisine: American
Calories: 530 kcal

Sweet brownies made just a little bit better with peanut butter swirled into the chocolate!


For the brownies:
  • 1 cup 2 sticks butter
  • 2 1/4 cups sugar
  • 4 large eggs
  • 1 1/4 cups cocoa powder
  • 1 teaspoon salt
  • 1 teaspoon baking powder
  • 1 teaspoon espresso powder optional
  • 1 tablespoon vanilla extract
  • 1 1/2 cups all-purpose flour
For the peanut butter swirl:
  • 4 tablespoons butter melted
  • 1/2 cup powdered sugar
  • 3/4 cup peanut butter
  • 1/4 teaspoon salt
  • 1/2 teaspoon vanilla


To make the brownies:
  1. Pre-heat the oven to 350 degrees. Butter a 9x13 baking dish.
  2. In small saucepan over low heat, melt butter completely. Stir in sugar and continue cooking for 1-2 minutes, stirring constantly. Do not allow sugar mixture to boil.
  3. Pour butter mixture into a large bowl or stand mixer, beat in cocoa powder, eggs, salt, baking powder, espresso powder, and vanilla extract. Mix until well combined.
  4. Stir in the flour until well combined.
  5. Spread the batter into prepared pan (it will be very thick and sticky).
To make the peanut butter swirl:
  1. Stir together all of the ingredients in a small bowl until well combined.
  2. Drop large spoonfuls of the filling over the brownie batter.
  3. Use a butter knife to swirl the mixture into the brownie batter.
  4. Bake for 30-35 minutes or until a tester comes out mostly clean.
  5. Cool completely.
Nutrition Facts
Peanut Butter Swirled Brownies
Amount Per Serving
Calories 530 Calories from Fat 270
% Daily Value*
Fat 30g46%
Saturated Fat 15g94%
Cholesterol 105mg35%
Sodium 508mg22%
Potassium 319mg9%
Carbohydrates 63g21%
Fiber 4g17%
Sugar 44g49%
Protein 9g18%
Vitamin A 670IU13%
Calcium 49mg5%
Iron 2.6mg14%
* Percent Daily Values are based on a 2000 calorie diet.

Nutrition Disclaimer: All information presented on this site is intended for informational purposes only. I am not a certified nutritionist and any nutritional information shared on should only be used as a general guideline.

Brownie recipe adapted from King Arthur Flour, Peanut Butter Swirl adapted from Martha Stewart