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–+ servings
fifteen Peanut Butter Chocolate Swirl Brownies on parchment with a knife, flowers, and plates

Peanut Butter Chocolate Swirl Brownies

4.34 from 6 votes
Prep Time: 20 minutes
Cook Time: 1 hour 10 minutes
Total Time: 1 hour 30 minutes
Author: Traci Crossland
Extra-fudgey, chocolatey, nutty, and SO delicious. These Peanut Butter Chocolate Swirl Brownies are truly the perfect treat!

Ingredients

  • 1 cup creamy peanut butter
  • 7 Tablespoons salted butter softened
  • 10 ounces semi-sweet chocolate
  • 7 Tablespoons salted butter
  • 5 large eggs
  • 1½ cups sugar
  • 1 Tablespoon vanilla
  • 1½ cups flour
US Customary - Metric

Instructions

  • Heat oven to 275 degrees.
  • Spray a 9-inch square pan with baking spray. Set aside.
  • In a medium bowl, combine 7 Tablespoons of the butter with the peanut butter.
  • Microwave in 30 second intervals, stirring after each, until melted and creamy. Set aside.
  • Place chocolate and remaining butter in a medium bowl and microwave in 30 second intervals, stirring after each, until melted .
  • Stir until smooth and combined completely. Set aside.
  • In the bowl of a stand mixer, combine eggs, sugar, and vanilla.
  • Beat at high speed for 10 minutes.
  • Reduce speed to low and stir in flour.
  • Pour half of batter into the peanut butter mixture and half into the chocolate mixture.
  • Stir each until thoroughly combined.
  • Spread half of peanut butter mixture in bottom of prepared pan.
  • Top with all of chocolate mixture.
  • Spoon remaining peanut butter mixture in randomly spaced dollops on top of chocolate mixture.
  • Use a knife (or something similar) to swirl the peanut butter with the chocolate.
  • Bake until puffy and cooked through, about 1 hour and 10 minutes.

Notes

Substitutions:
  • You can use crunchy peanut butter instead of creamy for an extra added crunch in the brownies!
  • You can use milk chocolate instead of semi-sweet.
Expert Tips:
  • The flaked salt on top is totally optional, but definitely delicious!
  • Don't push the knife all the way down when swirling the chocolate and the peanut butter. Just about halfway through.
  • You may need to cover the brownies while baking to keep from over browning.

Nutrition

Serving: 1Calories: 424kcalCarbohydrates: 40gProtein: 8gFat: 26gSaturated Fat: 12gPolyunsaturated Fat: 3gMonounsaturated Fat: 9gTrans Fat: 1gCholesterol: 79mgSodium: 184mgPotassium: 241mgFiber: 3gSugar: 27gVitamin A: 393IUCalcium: 31mgIron: 2mg

Nutritional information is only an estimate. The accuracy of the nutritional information for any recipe on this site is not guaranteed.