Fudgy Peanut Butter Swirl Brownies

These Peanut Butter Brownies are some of the best brownies in the world: They’re a rich and decadent brownie recipe topped with a gooey peanut butter topping. They’re epically fudgy and rich and the perfect brownie recipe for peanut butter lovers!

Peanut Butter, and Chocolate…It’s an obvious pairing. There really isn’t anything better than and warm and soft brownie swirled with an amazing peanut butter topping. Brownies like this one will stay at the front of your mind forever!

I have a lot of brownie recipes that I have made over the years, and this Peanut Butter Brownie Recipe is my standard brownie recipe with a peanut butter swirl layer on top.

Peanut Butter Brownies Ingredients

• Chocolate: I used melted unsweetened baking chocolate, and cocoa powder. You can use regular cocoa powder, or you can use Dark Cocoa Powder.
• Butter: I always start with unsalted butter, but if you use salted butter reduce the salt in the recipe to 1/4 teaspoon.
• Sugar: This recipe uses two kinds of sugar; granulated and powdered sugar. Granulated sugar adds sweetness and powdered sugar (or confectioners sugar) is a base for the topping.
• Peanut Butter: The peanut butter mixture is swirled on top the brownies. Be sure to use a no-stir (not natural) peanut butter. You can use any nut butter that’s no-stir.

How to make Peanut Butter Swirl Brownies

• Place baking chocolate and butter in a large, microwave safe bowl. Heat and stir until chocolate is smooth. Stir in sugar. Add eggs, vanilla, and cocoa and stir well. Add flour and stir carefully. Spread brownie batter in prepared baking 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 until the center seems set. Let cool before cutting.

Expert Tips

• You could add another frosting on top, like a chocolate ganache or peanut butter frosting for even more flavor.
• I have only made this recipe with shelf stable peanut butters (like skippy and jif). If you made this recipe with natural peanut butter – there is a chance the recipe could not work so be sure to use a no-stir peanut butter.
• You can line your pan with aluminum foil or parchment paper, but I like lining pans for easy slicing and removal.
• I recommend baking in metal pans for best results.

Storage & Freezing

Store brownies in an airtight container at room temperature for several days. You can freeze brownies for up to 3 months.

Peanut Butter Brownies Recipe

4.26 from 27 votes

Rich and fudgy brownies with a peanut butter swirl! These are some serious brownies!

Recipe Video

Prep Time 30 minutes minutes

Cook Time 30 minutes minutes

Total Time 1 hour hour

Yield 16 brownies

Serving Size 1 serving

Cook ModePrevent your screen from going dark

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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
• ▢ ⅓ cup (38g) powdered sugar
• ▢ 1 teaspoon vanilla

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Instructions

• Preheat oven to 350F. Line a 9×9-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.

Recipe 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.

Recipe 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

Nutritional information not guaranteed to be accurate

Course Dessert

Cuisine American

Author Dorothy Kern

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