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Hi Bold Bakers!
Chocolate and banana is a truly underrated flavor combination. The bitterness of the chocolate helps balance the sweetness of the banana, and in this banana bread brownie recipe, those bananas should be extra ripe and extra sweet!
This homemade banana bread brownie recipe is rich and wonderfully moist — no dry brownies here. I would say this recipe yields a dessert that is more like a brownie than banana bread, texture-wise.
While I love a good banana bread, sometimes you do have to mix things up a bit! This is a perfect recipe to use up those bananas you have laying around, or stuffed in your freezer.

What Are Banana Bread Brownies?
Banana bread brownies are an incredible combination of two flavors I love. It’s part banana bread, part brownie. You essentially are making two bowls of different flavors, then combining them in one pan to bake. The texture is chewy and moist, like brownies.
What You Need To Make Banana Bread Brownies
- Measuring cups and spoons
- 8×8-inch (20x20cm) baking pan
- Mixing bowls
How Do I Make Banana Bread Brownies
These unique brownies are very easy to make and the final product looks (and tastes) beautiful. Here is how you make banana bread brownies (get all the measurements down below):
- First, preheat your oven to 350°F (180°C) and butter and line an 8×8-inch (20x20cm) baking pan.
- Combine the flour, baking powder, and salt in a medium mixing bowl.
- In a separate mixing bowl, whisk the butter, sugar, eggs, and vanilla extract together.
- Combine the wet and dry ingredients and then divide the batter evenly into 2 separate bowls.
- In one bowl, stir in the cocoa powder and chopped chocolate. In the other bowl, stir in the mashed bananas.
- Pour the banana batter into your prepared pan. Then, dollop heaping scoops of the chocolate batter randomly over the banana batter.
- Take a butter knife and swirl the chocolate batter through the banana batter. Don’t mix it completely, we’re creating a marbled look.
- Bake for 40-45 minutes until a wooden skewer inserted in the middle comes out clean. Allow the brownies to cool completely before cutting.
Gemma’s Pro Chef Tips For Making Banana Bread Brownies
- As always, the riper the banana the better! That goes for any sort of banana bread you are baking.
- Instead of bittersweet chopped chocolate, you can use milk or white chocolate if you prefer.
- For more texture and flavor, add a ½ cup (2½oz/71g) of chopped toasted walnuts or pecans to the banana bread portion of the batter.
- When you are swirling the batters together, use a light touch so you don’t overmix the batter and lose the marbled effect.
- Make banana bread brownie sundaes with my homemade vanilla ice cream and salted caramel sauce or hot fudge.
- You can double this recipe and bake it in a 9×13-inch (23x33cm) pan for a larger crowd. The baking time will be a bit longer – just keep an eye on it and text with a skewer until done.
How Do I Store Banana Bread Brownies?
You can store leftover brownies in an airtight container at room temperature for up to 3 days. You can also freeze these brownies for up to 2 months. Defrost them at room temperature or in the microwave for a minute before serving.
Get more Banana Bread recipes:
- Mia’s Family Banana Nut Bread
- Sour Cream Banana Bread
- Chocolate Chip Banana Bread (with 10 Minute Microwave instructions)
- Banana Bread in a Mug
- Cream Cheese Banana Bread
- Banana Bread Muffins
- Pumpkin Banana Bread
- Gluten-Free Banana Bread
And don’t forget to buy my Bigger Bolder Baking Cookbook!
Full (and printable) recipe below!
Watch The Recipe Video!
Banana Bread Brownies Recipe


Ingredients
- ¾ cup (3¾ oz/105 g) all-purpose flour
- ½ teaspoon baking powder
- ½ teaspoon salt
- 1 ½ cups (12 oz/340 g) granulated sugar
- ½ cup (4 oz/115 g) butter , melted
- 3 large eggs , at room temperature
- 2 teaspoons vanilla extract
- ½ cup (2 oz/57 g) unsweetened cocoa powder
- ½ cup (3 oz/85 g) chopped bittersweet chocolate
- 2 large very ripe bananas, about (10 oz/284 g) , mashed
Instructions
To Make the Banana Bread Brownies Batter
- Preheat the oven to 350°F (180°C). Then butter and line an 8x8 inch (20x20 cm) baking pan and set aside.
- In a medium bowl, combine the flour, baking powder, and salt.
- In a separate bowl, whisk together the sugar, butter, eggs, and vanilla extract.
- Gently fold the dry ingredients into the wet until combined. Divide the batter evenly into 2 bowls.
- Sift the cocoa powder into the first bowl, add the chopped chocolate and mix until just incorporated.
- In the other bowl, add in the mashed banana and mix until combined.
- Dollop the brownie batter into the prepared pan, then pour over the banana batter.
- Use a butter knife to swirl the chocolate batter through the banana batter without mixing it completely, to create a marbled look.
To Bake the Banana Bread Brownies
- Bake for 40-45 minutes, until a wooden skewer inserted in the middle, comes out with a few moist crumbs. Let cool completely before cutting into squares.
To Serve and Store the Banana Bread Brownies
- Enjoy with a cup of coffee! Store leftovers in an airtight container at room temperature for up to 3 days. It also freezes well for up to 8 weeks.




These were AWESOME. I made them dairy free by substituting canola for the butter, and using Ghirardelli dark chocolate pieces. I doubled the recipe, baked it in a 9×13 stone pan at 325° for 45 mins.
So I’m thinking to myself, self, it is time to start thinking about what you are going to bake for everybody as Christmas gifts. Husband says, there you go thinking again. Since we grow our own bananas, I’m going to make banana bread, again, again, and again. “No Can” ( Hawaiian version of “No Way”) So I am saying Mahalo in advance. This is an unbelievably good recipe! I made a double batch because if I’m going to turn the oven on using the most expensive electricity in the United States, I’m going to make a double batch. … Read more »
Gemma, do you have a recipe for Pumpkin Bread Brownies? I think they would he Fantastic!
Gemma! This is amazing!! Can I substitute almond flour for regular flour? Do I have to add something else with almond flour to get the consistency?
you never disappoint my friend ❤️❤️❤️
Hi Gemma! I dont have dark chocolates, but i have milk chocolates instead. Would i need to adjust my sugar to make sure its not too sweet? If I should, how much?
This was way too sweet for me. If i reduce the sugar in this recipe, what would i have to tweak in order to have the same texture?
Hi gemma! I’m from Malaysia & I love following up with your recipes! Will adding brown sugar in with white sugar make a lot of difference to the brownie batter?
Hi Gemma.. oh i am Thailand and have a banana tree! So i have bananas coming out of my ears.LOL! I am so excited to try this recipe and will be going to make this tomorrow, can you please tell me can i use Dutch coco? i don have natural .. Thank you ..
Love the recipe – simply divine! I reduced the sugar to one cup and am glad i did it as the bananas were very sweet. I shall reduce further in my next bake and add chopped nuts
Gemma this is an amazing idea , really looks yummy. Can i replace the all purpose flour with oat flour?