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stacked brownies with peanut butter on top.
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4.26 from 27 votes

Peanut Butter Brownies Recipe

Rich and fudgy brownies with a peanut butter swirl! These are some serious brownies!
Prep Time30 minutes
Cook Time30 minutes
Total Time1 hour
Course: Dessert
Cuisine: American
Servings: 16 brownies
Calories: 304kcal
Author: Dorothy Kern
Cost: $5

Ingredients

For the Brownies

  • 4 ounces (113g) unsweetened baking chocolate coarsely chopped
  • ¾ cup (170g) unsalted butter
  • 1 ½ cups (300g) granulated sugar
  • ½ teaspoon salt
  • 3 large eggs
  • 1 teaspoon vanilla extract
  • 2 tablespoons (10g) Dutch-process cocoa powder (or regular unsweetened)
  • 1 cup (124g) all-purpose flour

For the peanut butter swirl:

  • ½ cup 133g) peanut butter
  • 2 tablespoons (28g) unsalted butter melted
  • cup (38g) powdered sugar
  • 1 teaspoon vanilla

Instructions

  • Preheat oven to 350F. Line a 9x9-inch pan with foil and spray with cooking spray.
  • Place baking chocolate and butter in a large, microwave safe bowl. Heat on HIGH power for 2-3 minutes, stirring every 30 seconds, until chocolate is smooth. Stir in sugar. Add eggs, vanilla, and cocoa and stir well. Add flour and stir carefully. Spread batter in prepared pan.
  • Stir together peanut butter, melted butter, powdered sugar, and vanilla. Drop spoonfuls on top of the brownies then swirl with a butter knife or the back of a wooden spoon.
  • Bake about 28-35 minutes, until the center seems set. Let cool before cutting.

Notes

  • You can use Dutch-process or regular unsweetened cocoa powder
  • This recipe has only been tested with shelf stable (not natural) peanut butter.
  • Store in an airtight container at room temperature for up to 4 days or you can freeze them.
  • I recommend baking in metal pans.

Nutrition

Serving: 1serving | Calories: 304kcal | Carbohydrates: 36g | Protein: 5g | Fat: 19g | Saturated Fat: 9g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 6g | Trans Fat: 0.4g | Cholesterol: 62mg | Sodium: 124mg | Potassium: 130mg | Fiber: 2g | Sugar: 24g | Vitamin A: 362IU | Calcium: 20mg | Iron: 2mg