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Three peanut butter swirl brownies on top of each other.
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Peanut Butter Swirl Brownies

Peanut Butter Swirl brownies are rich, fudgy, and loaded with nutty peanut butter flavor! Made with a boxed brownie mix, they're quick to prepare and perfect for a holiday dessert or afternoon snack to satisfy even the strongest sweet tooth.
Prep Time10 minutes
Cook Time35 minutes
Total Time45 minutes
Course: Appetizer/Dessert
Cuisine: American
Keyword: Peanut Butter Swirl Brownies
Servings: 12 servings
Calories: 320kcal

Equipment

  • 9x9 inch baking pan
  • Parchment paper or cooking spray
  • Large mixing bowl
  • Microwave safe bowl
  • Wire Rack
  • Knife for cutting brownies

Ingredients

  • brownie mix choose your favorite brand
  • ingredients listed on the brownie box
  • ½ cup peanut butter creamy
  • ¼ cup powdered sugar
  • ½ teaspoon vanilla extract

Instructions

  • Preheat the oven according to the brownie mix box instructions.
  • Line the 9X9 brownie pan with parchment paper. You can also grease it.
  • Make the brownie mix according to the box directions. Mix until smooth.
    brownie mix, ingredients listed on the brownie box
  • Add the brownie mix to the pan and spread it out evenly.
  • Add the peanut butter to a microwave-safe bowl and heat it for 20 seconds. Stir in the powdered sugar and vanilla until it is nice and smooth.
    ½ cup peanut butter, ¼ cup powdered sugar, ½ teaspoon vanilla extract
  • Drop the peanut butter mixture onto the brownie batter by spoonfuls.
  • Using a butter knife, swirl the peanut butter and brownie mixture. You can also use a toothpick to do this.
  • Put the pan in the oven and bake for the time listed on the box.
  • Once the time has passed, remove the brownies from the oven and let the pan cool for about 30 minutes.
  • Once the cooling time has passed, move the brownies to a wire rack to cool for about 30 more minutes.
  • Cut and serve.

Notes

  • These peanut butter swirl brownies are a delightful combination of rich, fudgy brownies and creamy peanut butter. The marbled effect not only adds visual appeal but also enhances the flavor with a subtle peanut butter twist.
  • Make sure to cool the brownies completely before cutting to achieve clean, neat slices.
  • Feel free to customize your brownie mix with add-ins like chocolate chips, chopped nuts, or even a drizzle of melted chocolate for extra indulgence.
  • Enjoy your homemade peanut butter swirl brownies with a glass of cold milk or a scoop of vanilla ice cream for an extra treat!

Nutrition

Serving: 1serving | Calories: 320kcal | Carbohydrates: 38g | Protein: 10g | Fat: 14g | Saturated Fat: 3g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 7g | Trans Fat: 0.01g | Cholesterol: 151mg | Sodium: 228mg | Potassium: 117mg | Fiber: 1g | Sugar: 25g | Vitamin A: 219IU | Calcium: 28mg | Iron: 2mg