Banana Bread Brownies combine the best qualities of two beloved baked goods into one decadent treat. The rich banana flavor and moist texture make these brownies irresistible. Topped with a luscious brown butter frosting, they are perfect for dessert or a delightful snack.
Why You’ll Love This Recipe
- Irresistibly Moist: The combination of ripe bananas and sour cream ensures a moist texture that stays fresh for days.
- Deliciously Unique: These brownies offer a unique twist on traditional banana bread, elevating your baking game.
- Quick & Easy: With a preparation time of just 15 minutes, you can enjoy these treats in no time.
- Customizable: Add walnuts or chocolate chips to suit your taste preferences.
- Perfect for Sharing: This recipe yields 24 servings, making it ideal for gatherings or family get-togethers.
Tools and Equipment
Having the right tools can make the baking process smooth and enjoyable.
Essential Tools
- Mixing bowls
- Measuring cups and spoons
- Whisk
- Spatula
- 15×10-inch jelly roll pan
- Saucepan
Why These Tools Matter
- Mixing Bowls: Essential for combining wet and dry ingredients without mess.
- Spatula: Helps to evenly spread the batter and frosting for a professional finish.
- Jelly Roll Pan: The right size ensures even baking, resulting in perfectly cooked brownies.
Ingredients for Banana Bread Brownies
For the Brownies
- 1 cup sour cream
- 1/2 cup chopped walnuts (optional)
- 1-1/2 cups sugar
- 2 teaspoons vanilla extract
- 1/2 cup butter, softened
- 1-3/4 cups (3 or 4) ripe bananas, mashed
- 2 large eggs
- 2 cups all-purpose flour
- 1 teaspoon baking soda
- 3/4 teaspoon salt
For the Brown Butter Frosting
- 1/2 cup butter
- 4 cups powdered sugar
- 1-1/2 teaspoons vanilla extract
- 3 tablespoons milk
How to Make Banana Bread Brownies Step-by-Step
Step 1: Preheat the Oven
Preheat your oven to 375°F (190°C). Grease and flour a 15×10-inch jelly roll pan to prevent sticking.
Step 2: Prepare the Batter
In a large bowl, cream together 1 cup sour cream, 1/2 cup softened butter, and 1-1/2 cups sugar until smooth. Beat in 2 large eggs, then mix in 1-3/4 cups mashed ripe bananas and 2 teaspoons vanilla extract. In a separate bowl, whisk together 2 cups all-purpose flour, 1 teaspoon baking soda, and 3/4 teaspoon salt. Gradually add the dry ingredients to the banana mixture, blending until just combined. Stir in 1/2 cup chopped walnuts if desired.
Step 3: Bake
Spread the batter evenly in the prepared pan. Bake for 20 to 25 minutes, or until golden brown. A toothpick inserted in the center should come out clean.
Step 4: Make the Frosting
While the bars are baking, prepare the frosting. In a large saucepan, melt 1/2 cup butter over medium heat. Continue to cook until the butter turns a delicate brown, then remove from heat immediately. Stir in 4 cups powdered sugar, 1-1/2 teaspoons vanilla extract, and 3 tablespoons milk. Whisk until smooth; the frosting should be thicker than a glaze but thinner than typical frosting.
Step 5: Frost and Serve
Spread the brown butter frosting over the warm bars using a spatula. The frosting will be easier to spread while the brownies are still warm.
Enjoy these decadent Banana Bread Brownies as a delightful treat with a rich, buttery frosting!
How to Serve Banana Bread Brownies
Banana Bread Brownies are versatile and can be enjoyed in a variety of ways.
A La Mode
Serve warm Banana Bread Brownies with a scoop of vanilla ice cream on top for a delightful contrast of temperatures and flavors.
Drizzled with Caramel
Add a drizzle of caramel sauce over the brownies for an extra layer of sweetness that complements the richness of the brown butter frosting.
With Fresh Fruit
Pair the brownies with fresh berries or sliced bananas for a refreshing and vibrant side that balances the dessert’s indulgence.
Pro Tips for the Best Banana Bread Brownies
To ensure your Banana Bread Brownies turn out perfectly, consider the following tips.
- Use Ripe Bananas: The riper the bananas, the sweeter and more flavorful your brownies will be.
- Don’t Overmix: When combining the dry ingredients with the wet mixture, mix just until combined to keep the brownies tender.
- Check for Doneness: Start checking the brownies a few minutes before the minimum baking time to prevent overbaking.
- Store Properly: Keep leftover brownies in an airtight container at room temperature to maintain their moisture.
- Experiment with Add-Ins: Feel free to customize by adding chocolate chips, dried fruit, or different nuts to enhance the flavor and texture.
Best Side Dishes and Pairings
Pairing your Banana Bread Brownies with the right sides can enhance your overall dessert experience.
- Coffee: The rich flavor of coffee complements the sweetness of the brownies, making it a perfect pairing for an afternoon treat.
- Milk: A classic choice, a cold glass of milk balances the sweetness and richness of the brownies beautifully.
- Tea: A warm cup of herbal or chai tea can bring out the spices and flavor notes in the brownies.
- Ice Cream: Vanilla or caramel ice cream serves as a creamy counterpart to the dense, fudgy brownies.
- Fruit Salad: A light fruit salad provides a refreshing contrast to the richness of the brownies, adding a burst of freshness.
Common Mistakes to Avoid
- Using Overripe Bananas: While ripe bananas are essential for flavor, using overly brown or fermented bananas can affect the texture and taste.
- Not Measuring Ingredients Accurately: Baking is a science; ensure you measure your flour and sugar carefully for the best results.
- Skipping the Frosting: The brown butter frosting adds a rich layer of flavor; don’t omit it, as it complements the brownies perfectly.
- Not Allowing to Cool: Ensure the brownies cool slightly before frosting to prevent the frosting from melting and sliding off.
Storage & Reheating Instructions
Refrigerator Storage
Store Banana Bread Brownies in an airtight container in the refrigerator. They will stay fresh for up to 5 days.
Freezing Instructions
To freeze, cut the brownies into squares and place them in a single layer in an airtight container, separating layers with parchment paper. They can be frozen for up to 3 months. Thaw overnight in the refrigerator before serving.
Reheating Tips
- Oven: Preheat to 350°F (175°C), place brownies on a baking sheet, and heat for about 10 minutes.
- Microwave: Place a brownie on a microwave-safe plate, cover with a damp paper towel, and heat for 20-30 seconds.
- Stovetop: Place a brownie in a pan over low heat, cover, and warm for a few minutes until heated through.
Frequently Asked Questions
Can I use whole wheat flour for Banana Bread Brownies?
Yes, you can substitute whole wheat flour for all-purpose flour, but the texture may be denser.
How do I know when the Banana Bread Brownies are done?
Insert a toothpick in the center; if it comes out clean or with a few moist crumbs, they are done.
Can I add chocolate chips to Banana Bread Brownies?
Absolutely! Adding chocolate chips can enhance the flavor and make them even more indulgent.
What is the best way to store Banana Bread Brownies?
Store them in an airtight container in the refrigerator for up to 5 days to maintain freshness.
Can I make the frosting ahead of time?
Yes, you can prepare the brown butter frosting in advance. Store it in the refrigerator and bring it to room temperature before spreading it on the brownies.
Final Thoughts
Banana Bread Brownies are a delightful fusion of flavors and textures that every dessert lover should experience. We encourage you to try this recipe and share your thoughts in the comments. Your feedback helps us create more delicious recipes for you!
Desserts
Banana Bread Brownies
5.0 from 24 reviews
These Banana Bread Brownies combine the moistness of banana bread with the rich flavor of brownies, topped with a decadent brown butter frosting. Perfect for dessert or a sweet snack, they are sure to please any crowd.

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Ingredients
- 1 cup sour cream
- 1/2 cup chopped walnuts (optional)
- 1-1/2 cups sugar
- 2 teaspoons vanilla extract
- 1/2 cup butter, softened
- 1-3/4 cups ripe bananas, mashed
- 2 large eggs
- 2 cups all-purpose flour
- 1 teaspoon baking soda
- 3/4 teaspoon salt
- 1/2 cup butter for frosting
- 4 cups powdered sugar
- 1-1/2 teaspoons vanilla extract for frosting
- 3 tablespoons milk
Instructions
- Preheat your oven to 375°F (190°C) and grease and flour a 15×10-inch jelly roll pan.
- In a large bowl, cream together sour cream, softened butter, and sugar until smooth. Beat in eggs, then mix in mashed bananas and vanilla extract. In a separate bowl, whisk together flour, baking soda, and salt, then gradually add to the banana mixture. Stir in walnuts if using.
- Spread the batter evenly in the prepared pan and bake for 20 to 25 minutes, or until golden brown and a toothpick inserted in the center comes out clean.
- While the bars are baking, melt butter for frosting in a saucepan over medium heat until it turns a delicate brown. Remove from heat and stir in powdered sugar, vanilla extract, and milk. Whisk until smooth.
- Spread the brown butter frosting over the warm bars using a spatula.
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