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Chocolate Peanut Butter Brownies

    A classic brownie recipe with a delicious peanut butter swirl, these peanut butter brownies are the perfect combination! Who can resist fudgy brownies with a peanut butter swirl? These brownies (and the peanut butter cookies) totally sabotaged any healthy eating this past week.

    One-Pot Brownie Recipe

    I love these simple easy to make chocolate peanut butter brownies. One pot and a baking dish are all that you need to make them. No fancy mixers required and the best part is that you won’t get a bunch of dishes dirty.

    Simply melt the chocolate chips and butter together – I do this over the stove, but you can also melt it carefully in the microwave if you want. Once the chocolate is melted and stirred smooth you can add in the rest of the basic ingredients.


    This brownie mix is so versatile. Throw in some walnuts, add some extract, mix in some candies; it’s all good.

    Cutting your peanut butter swirl brownies

    I cut up my brownies on the small side – maybe 1.5″ squared. But you can cut these as big or as small as you like. I used about half the pan to make the pie with, so please don’t eat all of the brownies if you are planning on making our famous peanut butter pudding pie.

    A GIF showing me slice the brownies into squares.

    Making the Peanut Butter Swirl

    The simple addition of the peanut butter is to give these brownies the additional flavor but also that pretty swirl on top. Here is how to make a nice decoration.

    To make that swirl, place your peanut butter into a plastic baggie and snip off a corner. This will help you control the peanut butter and add a slow stream over the brownie batter. Once the pb is pipped out, that the edge of a knife and drag it through the peanut butter creating that swirled look.

    Don’t worry about it being “perfect”. There’s no such thing. Just give it a good swirl – don’t actually mix it into the brownie batter.


    Storing leftovers

    These fudgy, chocolatey brownies can last up to 7 days in room temperature. Just pack them airtight into a bag or a container. But it is unlikely that they will make it that long! 😉 As these are one of your favorite homemade brownies!

    This recipe is part two of a three-part series including Peanut Butter Cookies and Peanut Butter Pudding Pie.

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    Fudgy Chocolate Peanut Butter Brownies

    A classic brownie recipe with a delicious peanut butter swirl, these peanut butter brownies are the perfect combination!
    Prep Time 15 minutes
    Total Time 3 hours
    Course Brownies
    Cuisine American
    Servings 30 Brownies
    Calories 170 kcal


    • 2 cups semi-sweet chocolate chips
    • 1 stick butter 8 tblsp
    • 3/4 cup light brown sugar
    • 3/4 cup sugar
    • 4 eggs
    • 1 teaspoon vanilla
    • 1 cup flour
    • 1/2 teaspoon salt
    • 1/2 cup peanut butter creamy is best


    • Preheat the oven to 350 °F and line a 9 x 13 baking dish with foil or use a nonstick one.
    • In a large pot melt the chocolate and butter over low heat. When melted and smooth remove from the heat and whisk to cool for 5 minutes.
    • Whisk in the sugars and then the eggs, one at a time. Finally add in the vanilla, salt, and flour. Pour into the baking dish.
    • Place the peanut butter into a baggie, snip off a small bit from the corner and then squeeze out four horizontal lines of peanut butter over top. Drag the edge of a knife across the peanut butter to create the swirls.
    • Bake for 45 minutes.
    • Cool for 2 hours before serving.
    • Cut and enjoy with a glass of milk.


    Serving: 1piece | Calories: 170kcal | Carbohydrates: 21g | Protein: 3g | Fat: 9g | Saturated Fat: 5g | Polyunsaturated Fat: 4g | Cholesterol: 33mg | Sodium: 92mg | Fiber: 1g | Sugar: 16g

    Nutrition information isn’t always accurate.

    Do you like this recipe?Share and mention @pintsizedbaker or tag #bypintsizedbaker!
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    Author: Susan Queck
    A classic brownie recipe with a delicious peanut butter swirl, these peanut butter brownies are the perfect combination!

    Images, text and all other content Copyrighted©Karyn Granrud, Susanne Queck and Wunderlander Verlag LLC, or ©Pro Stock Media via Unlicensed republishing permitted. As an Amazon affiliate, we earn on qualified purchases.

    Susan Queck

    Susan Queck

    I'm Suzy, the baker and dessert maker behind this blog. Baking is my lifelong passion, where I find the magic in transforming basic ingredients into delectable works of art. Join me in my sweet journey of culinary exploration and celebration! More about me.

    12 thoughts on “Chocolate Peanut Butter Brownies”

    1. Seriously can’t wait for the Friday post. Jose turns 40 April 1st and he loves loves loves peanut butter gonna make the pie for him when he comes out her for the kids spring break.

    2. It never fails, Karyn,…you always get me with your chocolate and peanut butter desserts…delicious! I love your desserts. They are always so yummy looking. Thanks for sharing and keep on baking so I can find new ways to ease my chocolate cravings with style!

    3. This is exactly how I make pb brownies too. Love that you don’t have to go to the fuss of mixing pb with anything to make the swirl. Straight up yummy pb works perfectly. These look delish, Karyn!

    4. I love peanut butter and chocolate together, a constant craving! These look delicious and I found them on whats cooking Wednesday!
      I make a very similar brownie with peanut butter swirl…so good!

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