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Holding up a chocolate peanut butter brownie.
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5 from 19 votes

Chocolate Peanut Butter Brownies

These chocolate peanut butter brownies are thick fudgy brownies with a crinkle top. It is full of chocolate chips and peanut butter chips. It is swirled with peanut butter on top.
Prep Time30 minutes
Cook Time45 minutes
Total Time1 hour 15 minutes
Servings: 12 pieces
Calories: 357kcal

Ingredients

  • ½ cup All-purpose flour
  • ¾ cup Dutch process cocoa powder
  • 1 tablespoon Cornstarch
  • ½ teaspoon Salt
  • 1 ⅓ cups White granulated sugar
  • 2 Large eggs
  • 1 Egg yolk
  • 5 tablespoon Unsalted butter melted
  • cup Oil vegetable or canola oil
  • 1 teaspoon Pure vanilla extract
  • ¾ cup Semi-sweet chocolate chips
  • ½ cup Peanut butter chips
  • ¼ cup Peanut butter

Instructions

  • Preheat oven to 325°F. Spray a 8X8 pan with baking non-stick spray. Line the bottom and 2 sides of the pan with parchment paper and spray again. Set aside.
  • In a medium bowl, sift the flour and cocoa powder. Then, add in cornstarch and salt. Melt the butter in the microwave, then let it cool.
    ½ cup All-purpose flour, ¾ cup Dutch process cocoa powder, 1 tablespoon Cornstarch, ½ teaspoon Salt
  • Using a mixer, beat the sugar, eggs, and egg yolk on high speed in a mixing bowl. Beat for 5 minutes, it will become very pale in color. This helps give the brownies a crinkle top.
    1 ⅓ cups White granulated sugar, 2 Large eggs, 1 Egg yolk
  • Add in melted butter, oil, and vanilla. Mix on low speed until just combined. Add in the dry ingredients and mix on low speed until just combined. Use a rubber spatula and scrape the bowl gently.
    5 tablespoon Unsalted butter, ⅓ cup Oil, 1 teaspoon Pure vanilla extract
  • Add in chocolate chips and peanut butter chips. Fold with a rubber spatula.
    ¾ cup Semi-sweet chocolate chips, ½ cup Peanut butter chips
  • Pour the brownie batter into the prepared pan. Heat the peanut butter in the microwave for 30 seconds until fully melted and liquidy.
    ¼ cup Peanut butter
  • Use a ½ teaspoon and place peanut butter dollops all over the top of the brownie batter. Use all of the peanut butter. Use a butter knife to gently swirl the peanut butter into the brownie batter.
  • Bake for 40-50 minutes. The brownies are done when edges are set, but the center is barely set. The middle should jiggle. It will keep cooking once pulled out of oven. Let cool completely on a wire rack before serving.

Notes

Flour- Make sure flour is spooned and leveled or use a kitchen scale. Compacted flour can cause the brownies to be cakey.
High altitude baking- Add an ½ extra tablespoon of flour.

Nutrition

Calories: 357kcal | Carbohydrates: 41g | Protein: 5g | Fat: 21g | Saturated Fat: 9g | Polyunsaturated Fat: 3g | Monounsaturated Fat: 8g | Trans Fat: 1g | Cholesterol: 31mg | Sodium: 138mg | Potassium: 185mg | Fiber: 4g | Sugar: 30g | Vitamin A: 173IU | Calcium: 21mg | Iron: 2mg