Let’s talk comfort food with a twist: the banana peanut butter brownie. It’s like banana bread met a Reese’s cup and had a gooey, chocolatey baby. This isn’t just another dessert it’s the kind of recipe you crave when your bananas are too ripe and your soul needs soothing. I first whipped this up after a long week, desperate to bake but too tired for anything fussy. One bowl, one pan, one heavenly smell coming from the oven later I knew I had found a keeper.
Over the years, I’ve made this banana peanut butter brownie for birthday parties, book clubs, and even just because it was Thursday. It never lasts more than a day, and it’s evolved into my signature “sweet hug” of a treat. Trust me you’ll want to make a double batch.
Table of Contents
Table of Contents
Why You’ll Love This Banana Peanut Butter Brownie
There’s a lot to adore about this banana peanut butter brownie, from the texture to the taste to the simplicity. Here’s why this recipe deserves a spot in your regular dessert rotation:
- Combines three classics: banana bread, brownies, and peanut butter
- Moist, dense texture with gooey peanut butter swirls
- Quick to make with pantry staples
- Great way to use overripe bananas
- No mixer needed
- Kids and adults alike go bananas for it
Want more rich brownie inspiration? Check out the Ube Tres Leches Cake for a similar but nut-free option.
Pure Comfort
Few things say comfort like peanut butter and banana, but when you add chocolate to the mix? It’s a triple threat of feel-good flavor. These banana peanut butter brownies are the kind of treat you bake in sweatpants, share with no one, and devour with a fork straight from the pan. Pair with a hot cup of tea, a Netflix binge, or a bubble bath you’ll be melting just like the chocolate chips inside.
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Banana Peanut Butter Brownie Recipe
A rich and gooey banana peanut butter brownie made with ripe bananas, cocoa powder, creamy peanut butter, chocolate chips, and vanilla.
- Total Time: 45 minutes
- Yield: 9 brownies
Ingredients
1/2 cup unsalted butter, melted
1 cup granulated sugar
2 large ripe bananas, mashed
2 eggs
1 teaspoon vanilla extract
1/3 cup unsweetened cocoa powder
1/2 teaspoon salt
1/2 teaspoon baking soda
3/4 cup all-purpose flour
1/2 cup creamy peanut butter
1/2 cup semi-sweet chocolate chips
Instructions
Preheat the oven to 350°F (175°C) and line an 8×8-inch baking pan with parchment paper.
In a large bowl, whisk together melted butter and sugar until smooth.
Add mashed bananas, eggs, and vanilla extract and stir until combined.
Sift in cocoa powder, salt, and baking soda, and mix until fully incorporated.
Gently fold in the flour until just combined, then stir in the chocolate chips.
Pour the batter into the prepared baking pan and smooth the top.
Drop spoonfuls of peanut butter over the batter and swirl using a knife or skewer.
Bake for 30 to 35 minutes or until a toothpick inserted in the center comes out with moist crumbs.
Cool in the pan for 20 minutes before slicing and serving.
Notes
Use very ripe bananas for maximum sweetness and moisture.
Natural peanut butter can be used, but stir thoroughly to avoid separation.
For a nut-free version, try sunflower seed butter as a substitute.
- Prep Time: 10 minutes
- Cook Time: 35 minutes
- Category: Melty Dessert
- Method: Baking
- Cuisine: American
Ingredients for Banana Peanut Butter Brownie
Here’s everything you need for these soft, rich brownies:
- 1/2 cup (1 stick) unsalted butter, melted
- 1 cup granulated sugar
- 2 large ripe bananas, mashed
- 2 eggs
- 1 teaspoon vanilla extract
- 1/3 cup unsweetened cocoa powder
- 1/2 teaspoon salt
- 1/2 teaspoon baking soda
- 3/4 cup all-purpose flour
- 1/2 cup peanut butter (creamy or crunchy)
- 1/2 cup chocolate chips
What You Need
You won’t need anything fancy:
- Mixing bowl
- Whisk or spatula
- 8×8 baking dish
- Parchment paper
- Knife or toothpick for swirling
Time to Cook Banana Peanut Butter Brownie
Prep Time: 10 minutes
Bake Time: 30–35 minutes
Total Time: 45 minutes
Steps to Make It
Step 1: Preheat your oven to 350°F (175°C). Line an 8×8 inch baking pan with parchment paper.
Step 2: In a bowl, mix melted butter and sugar until smooth.
Step 3: Stir in mashed bananas, eggs, and vanilla extract.
Step 4: Sift in cocoa powder, salt, and baking soda. Mix until just combined.
Step 5: Fold in flour, followed by chocolate chips.
Step 6: Pour the batter into your pan and smooth the top.
Step 7: Drop spoonfuls of peanut butter across the top and swirl using a knife.
Step 8: Bake for 30–35 minutes, until the center is just set and a toothpick comes out with a few moist crumbs.
Step 9: Cool for 20 minutes before slicing.
Make It Perfect
- Use very ripe bananas the spottier, the sweeter
- Don’t overmix the batter once flour is added
- Use a warm knife for clean slicing
- Chill brownies before cutting if you want sharp edges
Mix It Up
Want to tweak this banana peanut butter brownie to match your mood?
- Use almond or cashew butter for a twist
- Swirl in Nutella instead of peanut butter
- Add crushed peanuts or walnuts for crunch
- Try dark chocolate chunks instead of chips
- Layer in some sliced bananas for an extra punch
You can also try flavor ideas from these Gooey Butter Cake Bars they offer amazing texture inspiration.
Perfect Partners
These brownies pair beautifully with:
- Vanilla bean ice cream
- Peanut butter drizzle
- A glass of cold milk
- Espresso or strong coffee
- Salted caramel sauce
Busy Day Hero
Only have a few bananas left and no time for banana bread? This banana peanut butter brownie has your back. It’s a one-bowl, no-fuss, kid-friendly lifesaver that comes together fast with basic ingredients.
Work Ahead
Yes, you can make this in advance:
- Store unbaked batter in the fridge overnight
- Freeze baked brownies for up to 3 months
- Wrap and label them for future “sweet emergencies”
Save Some For Later
Here’s how to keep leftovers fresh (if there are any!):
- Room temp: 3 days in an airtight container
- Fridge: 5–7 days
- Freezer: 2–3 months (wrap individually in foil or plastic)
Everyone’s Happy
These banana peanut butter brownies are a total crowd-pleaser. Bring them to potlucks, bake sales, or birthday parties, and you’ll come home with an empty pan. They’re just sweet enough to feel indulgent without being over the top.
Hosting a brownie bar night? Include these alongside the Molten Cookie Dough Bake for a show-stopping combo.
Good For You Too
No, we’re not pretending this is a superfood, but here’s the truth: bananas = potassium and fiber, peanut butter = protein, and there’s no oil, no frosting, and only one bowl. Let’s call it a feel-good indulgence with better-for-you benefits.
Easy Clean Up
One bowl, one spatula, one pan. That’s it. Line your pan with parchment, and you’ll have almost nothing to clean. Perfect for weeknights when you want dessert without the drama.
Switch It Up
There’s endless flexibility with this base:
- Make it vegan: flax eggs + vegan butter
- Make it gluten-free: 1:1 GF flour blend
- Make it sugar-free: use monk fruit sweetener
- Add protein powder: sub 1/4 cup flour for vanilla protein
You can also use some tricks from our Edible Eggless Cookie Dough post to make a swirl-in topping that’s no-bake friendly.
Simply Perfect
This banana peanut butter brownie isn’t fancy or fussy it’s just everything you want in a bite: soft, gooey, rich, and real. It hits the banana bread craving and the brownie craving all in one glorious mouthful. And best of all? It’s made with love and pantry basics.
Conclusion for Banana Peanut Butter Brownie
There you have it the only banana peanut butter brownie recipe you’ll ever need. It’s fast, flexible, packed with flavor, and wildly addictive. Whether you’re treating guests, baking for family, or just in need of a solo sweet treat, this brownie is ready to be your new go-to. Easy, delicious, and loved by all.
Looking for more sweet inspiration?
👉 Follow along on Facebook and Instagram” for even more easy, cozy recipes made with love.
Frequently Asked Questions About Banana Peanut Butter Brownies
Can you add banana to peanut butter brownies?
Yes! Mashed ripe bananas add moisture, natural sweetness, and a soft texture to peanut butter brownies. They also enhance the flavor and reduce the need for extra sugar or eggs.
What does banana do in brownie recipes?
Bananas act as a natural binder and sweetener. In brownies, they create a fudgy texture, add moisture, and bring a mild fruity flavor that pairs well with chocolate and peanut butter.
How do I keep banana peanut butter brownies from being too gooey?
To avoid overly gooey brownies, measure the banana accurately, don’t overmix the batter, and bake until a toothpick inserted in the center comes out with moist crumbs—not raw batter.
Can banana peanut butter brownies be made gluten-free?
Absolutely. You can substitute all-purpose flour with a gluten-free blend. Make sure your peanut butter and other ingredients are certified gluten-free for a safe and delicious treat.