Peanut Butter Swirl Brownies are a chocolate peanut butter lovers dream! Fudgy brownies with a gooey peanut butter swirl inside and on top.
You also need to give our Peanut Butter Pretzel Brownies a try! They are sweet salty perfection!
Originally posted August 28, 2010. Updated May 8, 2024.
I have been in such a brownie mood lately but I’ve been too lazy to make them and we haven’t had a boxed mix in the house. I’ve seriously been thinking about brownies for weeks.
I was going through my list of recipes that need update and saw these and immediately went to the store for creamy peanut butter (we’re a crunchy household).
I’m usually a Classic Brownies girl but when I’m in the mood for something different, these are it.
Why You’re Going To Love This Recipe
- Who doesn’t love chocolate and peanut butter together?! It’s a classic combination and one you can’t go wrong with.
- The fudgy brownies with the gooey peanut butter swirl is my idea of the perfect brownie texture combo. The peanut butter swirl isn’t a batter so it doesn’t set when baked. It stays soft and, yeah, almost gooey.
- No room temperature! Listen, there are times when I decide against baking just because I either don’t have time to wait for butter to come to room temperature or don’t have patience. For this recipe, you melt the butter for the batter AND the peanut butter swirl.
Ingredients
- Butter – no need to let it come to room temperature, we are melting the butter to make the brownie batter and the peanut butter filling.
- Semisweet chocolate – you can chop up a bar of semisweet baking chocolate or use semisweet chocolate chips like I did. Chocolate chips tend to be cheaper than the baking bars.
- Flour – regular all-purpose flour. And not a lot of it because we want really fudgy, chewy brownies.
- Baking powder – just a little bit to give the brownies a bit of a lift.
- Sugar – regular granulated sugar for the brownie batter.
- Eggs – aren’t the eggs from my chickens cute?!
- Vanilla – vanilla makes everything better!
- Creamy peanut butter – make sure it’s creamy so you get a really smooth peanut butter swirl.
- Powdered sugar – powdered sugar makes a really smooth peanut butter swirl, as opposed to what granulated sugar would look like.
How Long Are They Good For?
These brownies will be good for up to 4 days at room temperature or up to a week in the fridge. Either way, make sure to store them in an airtight container.
Can You Freeze Them?
You can freeze these brownies for up to 3 months. I recommend wrapping them individually in plastic wrap and then placing them in freezer ziploc bags.
When you are ready to enjoy them, let them sit at room temperature for an hour or 2.
More Brownie Recipes
- Cosmic Brownies
- Peanut Butter Cup Brownies
- Caramel-Filled Brownies
- Nutella Brownies
- Peppermint Chip Brownies
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Peanut Butter Swirl Brownies
Peanut Butter Swirl Brownies are a chocolate peanut butter lovers dream! Fudgy brownies with a gooey peanut butter swirl inside and on top.
Ingredients
- 8 tablespoons (1 stick) unsalted butter, cut into small pieces
- 6 ounces semisweet chocolate
- ⅔ cup all-purpose flour
- ½ teaspoon baking powder
- ¼ teaspoon salt
- ¾ cup granulated sugar
- 3 large eggs
- 2 teaspoons pure vanilla extract
For the filling:
- 4 tablespoons unsalted butter, melted
- ½ cup confectioners’ sugar
- ¾ cup smooth peanut butter
- ¼ teaspoon salt
- ½ teaspoon pure vanilla extract
Instructions
- Preheat oven to 32F. Butter an 8-inch square baking pan or line with parchment paper.
- Put butter and chocolate in a microwave-safe mixing bowl and microwave in 30 second increments, stirring after each one, until smooth. Let cool slightly.
- While the butter mixture cools, whisk together flour, baking powder, and salt in a separate bowl.
- One butter mixture has cooled, add sugar and stir well. Add eggs, and whisk until mixture is smooth. Stir in vanilla. Add flour mixture; stir until well incorporated.
- Make filling: In a mixing bowl, stir together butter, confectioners’ sugar, peanut butter, salt, and vanilla until smooth.
- Pour half of the butter into prepared pan; spread evenly with a rubber spatula.
- Drop dollops of half of the peanut butter filling (about 1 tablespoon each) on top of batter.
- Add remaining chocolate batter on top and gently spread to sides of the pan.
- Drop dollops of remaining filling on top. Gently swirl peanut butter filling into batter with a butter knife, running the knife lengthwise and crosswise through layers.
- Bake for about 45 minutes, or until a toothpick inserted into the center comes out mostly clean. Let cool in pan for 15 minutes and then use parchment to lift out of the pan. Cool completely on a wire rack before slicing and serving.
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assfacerobot says
Just had one with some vanilla ice cream. Delicious. And yes, they look great, too.
Want. Rest. Of. Pan.
Jeannie says
Wow! I love the look of these brownies! Awesome, am going to try it soon. THanks for sharing!
.-= Jeannie´s last blog ..Mieng Kham =-.
Laney says
I made these last night and they were excellent! Mine didn’t turn out as pretty as Amanda’s but they tasted great.
Lisa says
Have you tried making these using boxed brownie mix and then using the topping as stated?
.-= Lisa´s last blog ..Toffee Saltine Bars =-.
amanda says
I haven’t tried it but I don’t see why it wouldn’t work. Let me know if you give it a try. :D
Pamela says
Oh no…you can never have to many cookies of any kind! Yum.
.-= Pamela´s last blog ..CEiMB-Mixed Berry Cobbler =-.
Emily says
These look yummy! I’m definitely adding them to the top of my “To Make” list.
.-= Emily´s last blog ..Dulce de Leche Peach Tart =-.
Laney says
Is there a trick to lifting it out of the pan? Or do you think it would be ok to just let it cool completely in the pan?
amanda says
I always leave enough parchment hanging over the side so that I can lift it out. With an 8 x 8 pan I can lift it out myself without it tearing but anything bigger, I have the get my husband to grab one side while I grab the other. Good luck! :)
Laney says
I never thought of that! Thanks!!
Honey says
OMG… these look so good! I’ve tried making similar brownies twice and both times it was a failure becuase the PB was too salty.
OMG.. i have to try these.
great job!
.-= Honey´s last blog ..Broccoli Mac & Cheese REDUCED FAT =-.
siri says
I could totally go for one of these right now! Peanut butter is hard to come by in Norway, but I’d ration out a jar just to make a batch of these. They look like they’d be perfect after a long hike. Or maybe just on a lazy Sunday afternoon with a cup of coffee. Martha S is the best.
.-= siri´s last blog ..Homemade Baby Food- Sweet and Savory Chicky =-.
The Blue-Eyed Bakers says
Too many bars or brownies?! Not possible. And adding peanut butter to anything just makes it a million times more delicious!
.-= The Blue-Eyed Bakers´s last blog ..Easy Oreo Peanut Butter Pie =-.
Kim says
Oh-MY-GOD!!!! These brownies looks so scrumptious!!!!!!
.-= Kim´s last blog ..Petits fours glacés au chocolat et aux noisettes =-.
Erin says
I have the same bar addiction. They are definitely what I make the most. And, these will be next on the list!
.-= Erin´s last blog ..Huckleberry Muffins =-.
briarrose says
Lovely and they look delicious!
.-= briarrose´s last blog ..Oatmeal Cookies =-.
Samantha Angela @ Bikini Birthday says
Yeah, those looks pretty amazing.
AudraG says
Yum! One of my favorite combos. Might need to warm the oven up this weekend and try these out.
Breige says
Wow, these look amazing!!
.-= Breige´s last blog ..I have some stalkers… =-.