Small Batch Peanut Butter Brownies (Fluffernutter Brownies)
Small Batch Peanut Butter Brownies are homemade chewy fudge brownies made from scratch and baked in a loaf pan. Previously known as Fudgy Fluffernutter Swirl Brownies with a marshmallow fluff and peanut butter swirl.
Decisions, decisions. They suck sometimes.
I’m not talking about choosing between chocolate and vanilla, cookies and brownies, or cheese and no cheese.
I’m talking about change.
Change is good. Change is scary. Change is risky.
And sometimes when the decisions leave you restless and confused inside, you don’t know which way to jump.
Being an adult is hard. But you know what isn’t hard?
Learning how to make these easy Small Batch Peanut Butter Swirl Brownies from scratch.
There are no decisions here. Chocolate peanut butter brownies with marshmallow fluff in one fudgy brownie.
See? No decisions. Just make them, eat them, and pretend the real world doesn’t exist.
I love making homemade brownies because you only need one pot to make the batter. This brownie recipe uses cocoa powder so you don’t need to melt chocolate separately.
First, you melt the butter and peanut butter together. Then you whisk in the cocoa powder, sugar, salt.
At this point, the batter will be thick and grainy. Once you beat in the egg and vanilla, it’ll smooth back out.
Then you stir in the flour and peanut butter chips. Transfer to a loaf pan, swirl in more peanut butter and marshmallow fluff, and 20 minutes later, you have dessert.
I knew these brownies needed to be chewy and fudgy because I didn’t want to take the extra time to frost them. In fact, the peanut butter swirl on top acts like a “frosting”, which makes them ready to serve as soon as they cool.
All of this means you can whip up brownies at the last minute with little effort. Easy decision. The hardest part is deciding how many to eat.
Another decision that you don’t have to make is whether you should swirl in peanut butter or marshmallow fluff. Just swirl in both!
Fluffernutter refers to using both marshmallow fluff and peanut butter. Fluffer = marshmallow fluffer while nutter = peanut butter.
I originally published the recipe as Fudgy Fluffernutter Swirl Brownies, but not everyone was familiar with the term fluffernutter.
Hopefully renaming them to Small Batch Peanut Butter Swirl Brownies paints a better picture.
On second thought, maybe I’ll just eat them.
More Small Batch Brownie Recipes
- Small Batch Brownies without peanut butter
- Brownies For Two
- Single Serve Brownie
Small Batch Peanut Butter Swirl Brownies In A Loaf Pan
Small Batch Peanut Butter Swirl Brownies are homemade chewy fudge brownies made from scratch and baked in a loaf pan.
- 3 tablespoons unsalted butter
- 5 tablespoons creamy peanut butter
- 1/4 cup unsweetened cocoa powder
- 1 cup granulated sugar
- 1/4 teaspoon salt
- 1 egg, room temperature
- 1/2 teaspoon vanilla extract
- 1/2 cup all-purpose flour
- 1/4 cup peanut butter chips
- 2 tablespoons marshmallow fluff
- Preheat oven to 350F. Lightly grease a 9x5 loaf pan and line with parchment paper.
- In a large saucepan, melt the butter and 3 tablespoons peanut butter.
- Remove from the heat and whisk in cocoa powder, sugar, and salt (batter will be thick and somewhat grainy).
- Whisk in the egg and vanilla.
- Switch to a rubber spatula and stir in the flour and peanut butter chips. Spread batter into the pan.
- In a microwavable-safe bowl or cup, warm the marshmallow fluff for 15 seconds or until easy to spread. Spoon onto of the brownie batter and swirl around with a knife. Repeat with the remaining 2 tablespoons peanut butter.
- Spread into the pan. Bake 18-20 minutes or until the edges pull away from the sides and the center doesn't look wet.
- Cool to room temperature then remove from the pan. If brownies stick, refrigerate until cold, bring back to room temperature, then try again. Store in an airtight container for up to 1 week.
Don't want peanut butter in your brownies? Check out my recipe for Small Batch Fudge Brownies made without peanut butter.
To make Brownie Ice Cream, follow the directions for my German chocolate ice cream using 4 ounces semisweet chocolate. Instead of adding frosting, add about half a pan of chopped brownies.
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Thanks for the shout out! These brownies look incredible! The combination would drive my kids crazy happy!
Being an adult IS hard. Good thing we have delicious brownies like these to make some grownup decisions easier. :) YUM.
Thanks so much for linking up my puppy chow! I really appreciate it :) These brownies look awesome. I love pb and marshmallow together and adding them to brownies takes it totally over the top!
Being an adult IS hard.
But these brownies make it a bit more bearable…
like…a lot more. Because these brownies are like miraculous
haha yea please let’s just eat these until we are in our own little world
Decisions are hard. And not fun sometimes, even when you know they are for the best! But the decision to stuff my face with these brownies- well that wouldn’t be hard! LOL
These brownies totally have my name written all over them! They look absolutely delicious! Thanks for the link, too!
I hate change. I HATE making decisions. That’s what my husband is for. ;)
LOVE the brownies!
These brownies sound brilliant. I’m definitely giving this a try. Yum!!!
Ha, I totally eat my way around being an adult. These look perfect for such occasions.
I lovvvvvvve fluffer nutter anything! The combination of peanut butter and marshmallow fluff is amazing. What a great idea to add these to brownies. I can’t wait to try this recipe!
I think I found the brownies I’m going to make for Memorial Day. These look beyond delicious. Yummo!
As I get older I think I’m ever so slowly getting better at embracing change. And I’m more than happy to embrace these brownies asap!!
Haha, that’s right, instead of picking one, it’s even better to include both ingredients. :D More the merrier. :) These brownies look really pretty. It’s going to be tough to decide how many I’m allowed to eat… Maybe forget about it for these brownies! ;)
I hate being an adult *stamps feet*. Weeeeell, maybe I shouldn’t take it that far. It is pretty awesome that I have a kitchen fully stocked with bakeware and sugar. Having the freedom to whip up these uber decadent brownies whenever I want is definitely a perk. I love change too, which is why I’ve had four different jobs in the last five years. Anyhoo, enjoy more brownies until you figure it out because I know that you will :)
Carla, I feel like much of the major life decisions have been taken out of my hands, are beyond my control, so I guess the smaller ones don’t seem to really get to me like they used to. That being said, I’m now going to scan your index for a brownie recipe I can make in a loaf pan, since my son requested a mint chocolate chip ice cream cake on a brownie base (I usually do an Oreo pie crust like I did while working at Baskin Robbins).