Brownie Stuffed Banana Bread (with Brown Butter)
This Brownie Stuffed Banana Bread is soft, fluffy, and perfectly tender on the inside with a beautifully golden and slightly crisp exterior that makes every single slice absolutely irresistible. The brown butter adds a warm, nutty richness that pairs beautifully with the banana and chocolate flavors throughout, while a rich and fudgy brownie filling melts into the banana bread with every single bite. Served warm with a pat of butter, a sprinkle of flaky sea salt, and a hot cup of coffee — this is the treat that works just as well for breakfast as it does for dessert!
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Ingredients You Need:
Full ingredients and recipe are in the recipe card below. Read through this section for all the ingredients substitution and baking tips!
Salted Butter: Used in both the brown butter banana bread and the brownie filling — browned until deep golden amber and nutty for the banana bread batter for a rich, warm depth of flavor, and melted together with the dark chocolate for a rich, fudgy brownie filling.
Ripe Bananas: The star of the banana bread — deeply speckled and ripe bananas add the most natural sweetness, moisture, and rich banana flavor to every single slice. Make sure to measure out the mashed banana for the most consistent results.
Brown Sugar: Adds a deep, molasses-like sweetness to both the banana bread batter and the brownie filling that enhances the warm brown butter and rich chocolate flavors throughout every single bite.
Greek Yogurt or Sour Cream: Adds richness and moisture to the banana bread batter, keeping the crumb incredibly soft, tender, and moist in every single slice — see the notes section for using sourdough discard as a substitute.
Eggs: Provide structure, richness, and stability to both the banana bread batter and the brownie filling while helping everything hold together and bake up perfectly throughout.
Vanilla Bean Paste or Extract: Adds a warm, sweet, and aromatic flavor that enhances both the banana bread batter and the rich and fudgy brownie filling throughout.
All-Purpose Flour: Used in both the banana bread batter and the brownie filling — provides structure while keeping the banana bread crumb soft, light, and perfectly tender and gives the brownie filling its signature fudgy and perfectly set texture.
Baking Soda: Reacts with the acidic ingredients in the banana bread batter to help the loaf rise and stay soft and tender throughout.
Baking Powder: Works alongside the baking soda to give the banana bread the perfect lift and ensures a beautifully domed and golden top on every single loaf.
Salt: Balances the sweetness and enhances all the warm, rich flavors throughout both the banana bread batter and the brownie filling.
Semi-Sweet Chocolate Chips: Folded into the banana bread batter for little pockets of rich, melty chocolate that pair perfectly with the warm brown butter banana flavor throughout every single slice.
Dark Chocolate: Melted together with the butter for the brownie filling to create a rich, deep, and intensely chocolatey base that gives the brownie filling its signature fudgy and irresistible texture.
Dutch-Process Cocoa Powder: Whisked into the brownie filling for the deepest, richest, and most fudgy chocolate flavor — regular unsweetened cocoa powder works as a substitute but dutch-process is strongly recommended for the best result.
Instant Espresso Powder: Optional but highly recommended — a small amount added to the brownie filling enhances the deep chocolate flavor without adding a noticeable coffee taste, making the brownie filling even more rich and irresistible.
Granulated Sugar: Sweetens the brownie filling and helps create that perfectly fudgy, crinkly, and set brownie texture that melts into every single bite of the banana bread.
Why You’ll Love Brownie Stuffed Banana Bread (w/ Brown Butter):
Soft, Fluffy, And Perfectly Tender: This banana bread is incredibly soft, fluffy, and perfectly tender on the inside with a beautifully golden and slightly crisp exterior that makes every single slice absolutely irresistible.
That Rich Brown Butter Flavor: The brown butter adds a warm, nutty richness that takes this banana bread completely over the top and pairs beautifully with the ripe banana and rich chocolate brownie flavors throughout.
That Rich And Fudgy Brownie Filling: A rich, fudgy brownie filling is stuffed right into the center of the banana bread and melts into every single bite for the most indulgent and irresistible chocolate surprise throughout.
The Ultimate Flavor Combination: The warm, nutty brown butter, sweet ripe banana, and rich fudgy brownie filling come together for the most perfectly balanced and absolutely delicious flavor combination in every single slice.
Works For Breakfast And Dessert: This banana bread is just as delicious served warm for a cozy breakfast with a hot cup of coffee as it is served as an indulgent dessert with a scoop of vanilla ice cream.
Served Warm With Butter And Flaky Sea Salt: A pat of butter melting over the warm slice and a sprinkle of flaky sea salt that balances all the rich, sweet flavors makes every single bite completely and utterly irresistible.
Bakery-Style Results At Home: This banana bread looks and tastes like it came straight from your favorite bakery but is made completely from scratch right in your own kitchen with simple, everyday ingredients.
Perfect For Any Occasion: Whether it is a lazy weekend morning, a cozy afternoon treat, a holiday breakfast, or any special occasion, this brownie stuffed banana bread is always the ultimate showstopper on the table.
Tips for Making Brownie Stuffed Banana Bread (w/ Brown Butter):
Brown The Butter First: Brown the butter for the banana bread before starting anything else so it has time to cool slightly before adding the other wet ingredients — hot brown butter can scramble the eggs if added too quickly.
Watch The Brown Butter Closely: Butter can go from perfectly browned to burnt very quickly, so stay at the stove and stir continuously until it turns a deep golden amber color and smells nutty. Remove from the heat immediately.
Let The Brown Butter Cool: Allow the brown butter to cool for about 15–20 minutes before adding the other wet ingredients — it should be warm but not hot to the touch so it doesn't scramble the eggs when combined.
Prepare The Brownie Filling While The Brown Butter Cools: Use the brown butter cooling time to prepare the brownie batter filling so both batters are ready to assemble at the same time and the process stays quick and seamless.
Melt The Butter And Chocolate Together Slowly: Melt the butter and chocolate for the brownie filling together in the microwave at 20-second intervals, stirring between each — slow and gentle melting prevents the chocolate from seizing or burning.
Let The Chocolate Mixture Cool Slightly Before Adding The Eggs: Allow the melted chocolate and butter mixture to cool just slightly before adding it to the egg and sugar mixture — adding hot chocolate to the eggs can scramble them and affect the texture of the brownie filling.
Whisk The Eggs And Sugar Until Frothy: Whisk the egg, sugars, and vanilla together until the mixture is frothy and well combined — this is what gives the brownie filling its rich, fudgy, and perfectly set texture.
Use Dutch-Process Cocoa Powder: Dutch-process cocoa powder is strongly recommended for the deepest, richest, and most fudgy chocolate flavor in the brownie filling — regular unsweetened cocoa powder works as a substitute but the flavor will be slightly lighter.
Use Very Ripe Bananas: The riper the bananas, the sweeter and more flavorful the banana bread will be. Look for bananas that are deeply speckled or almost fully brown for the best banana flavor throughout.
Use Room Temperature Ingredients: Greek yogurt or sour cream and eggs should be at room temperature so they incorporate evenly into the banana bread batter for the smoothest, most consistent result.
Don't Overmix The Banana Bread Batter: Mix the dry and wet ingredients together until just combined and there are no flour streaks remaining — the batter will be lumpy and that is completely normal. Overmixing will result in a dense, tough banana bread.
Must Use A 9x5" Loaf Pan: This recipe must be made in a standard 9x5" loaf pan — nothing smaller or the batter will spill over during baking. Line it with parchment paper that hangs over the sides for easy removal.
Create A Divot For The Brownie Filling: Use a spoon or spatula to create a little divot in the center of the first layer of banana bread batter before adding the brownie filling — this keeps the brownie filling perfectly centered and prevents it from shifting during baking.
Spread The Brownie Filling Carefully: Spread the brownie batter filling into an even layer in the center of the banana bread batter, leaving about 1/4 inch around the edges — this prevents the brownie filling from leaking out the sides during baking.
Run A Knife Down The Center Before Baking: Use a butter knife or toothpick to run a line down the center of the batter lengthwise before baking — this creates that classic crack and dome top while baking for a beautiful bakery-style presentation.
Place Thin Strips Of Cold Butter On Top: For the most beautiful and classic domed crack on top, place two thin strips of cold butter in the crease created by the butter knife before baking — this is optional but highly recommended for a stunning bakery-style finish.
Tent With Foil If Browning Too Quickly: Check the loaf at 50 minutes and if the top is browning too quickly, tent it loosely with foil for the remainder of the baking time to prevent over-browning.
Cool Completely Before Slicing: This is the most important step — allow the loaf to cool in the pan for at least 15–20 minutes before transferring to a wire rack, then cool for at least another 45–60 minutes before slicing. Cutting into it too soon will cause the brownie filling to spill out before it has had time to set.
How to Store Brownie Stuffed Banana Bread (w/ Brown Butter):
Best Served Fresh: This brownie stuffed banana bread is at its absolute best served warm and fresh the day it is made with a pat of butter melting over the top and a sprinkle of flaky sea salt for the ultimate cozy treat.
Room Temperature (Short-Term): Store the banana bread covered or in an airtight container at room temperature for up to 2 days. The brownie filling will firm up slightly as it cools but will still be incredibly fudgy and delicious.
Refrigerator: Store leftover banana bread covered or in an airtight container in the refrigerator for up to 4 days. The brownie filling will firm up in the refrigerator so reheating before serving is recommended for the best fudgy texture.
Freezer: Freeze individual slices of the cooled banana bread in a freezer-safe bag or container for up to 2 months. Thaw overnight in the refrigerator or at room temperature before reheating for the best texture and flavor.
To Reheat: Warm individual slices in the microwave for 20–30 seconds until warmed through and the brownie filling is fudgy and gooey again — this brings back that fresh-from-the-oven texture and flavor beautifully.
To Serve From Cold: Let refrigerated slices sit at room temperature for 15–20 minutes before reheating for the most even warmth throughout and the best soft, tender texture.
Make Ahead: This banana bread can be baked a day in advance, cooled completely, covered tightly, and stored at room temperature or in the refrigerator. Slice and reheat before serving for the best warm, fudgy result.
FAQs:
Q: Can I make this brownie stuffed banana bread ahead of time? A: Yes. The banana bread can be baked a day in advance, cooled completely, covered tightly, and stored at room temperature or in the refrigerator. Slice and reheat before serving for the best warm, fudgy, and delicious result.
Q: Can I use sourdough discard instead of Greek yogurt or sour cream? A: Yes. Sourdough discard works as a substitute for the Greek yogurt or sour cream in the banana bread batter — see the notes section for the exact substitution details and how it affects the flavor and texture.
Q: Do I have to brown the butter? A: Browning the butter is strongly recommended as it adds a deep, nutty richness that takes this banana bread completely over the top. If you are short on time, melted butter works as a substitute but the flavor will be slightly different.
Q: Can I use regular cocoa powder instead of dutch-process? A: Yes. Regular unsweetened cocoa powder works as a substitute for dutch-process cocoa powder in the brownie filling. Keep in mind that dutch-process cocoa powder gives the filling a deeper, richer, and more fudgy chocolate flavor so it is recommended to use it if possible.
Q: Why does the loaf need to cool for so long before slicing? A: Cooling the loaf for at least 45–60 minutes after baking is essential — the brownie filling needs time to set up properly in the center. Cutting into it too soon will cause the brownie filling to spill out before it has had time to firm up.
Q: Can I use a smaller loaf pan? A: No. This recipe must be made in a standard 9x5" loaf pan — using a smaller pan will cause the batter to overflow during baking. Make sure to use the correct pan size for the best results.
Q: What type of chocolate works best in this recipe? A: Semi-sweet chocolate chips work beautifully in the banana bread batter and dark chocolate chips or chopped dark chocolate is recommended for the brownie filling for the deepest, richest, and most fudgy chocolate flavor throughout.
Q: Why do I run a knife down the center of the batter before baking? A: Running a butter knife or toothpick down the center of the batter lengthwise before baking helps create that classic crack and domed top while baking — placing two thin strips of cold butter in the crease takes it even further for a beautiful bakery-style finish.
Q: Can I add nuts to this recipe? A: Yes. Chopped walnuts or pecans can be folded into the banana bread batter or the brownie filling for an extra layer of nutty flavor and crunch that pairs beautifully with the brown butter and chocolate flavors throughout.
Q: Can I freeze this banana bread? A: Yes. Freeze individual slices of the cooled banana bread in a freezer-safe bag or container for up to 2 months. Thaw overnight in the refrigerator or at room temperature and reheat in the microwave before serving for the best warm, fudgy result.
Love this? Check out my other classic recipes:
Make sure to tag me @wellmadebykiley on Instagram and leave a review or comment if you make this brownie stuffed banana bread (w/ brown butter). Happy baking!
