These Banana Bread Brownies with brown butter frosting are a delightful twist on classic banana bread. Perfect for any occasion, these brownies combine the rich flavors of ripe bananas and buttery goodness. Their unique texture makes them a hit at parties, family gatherings, or just a cozy night in. Get ready to indulge in this easy-to-follow recipe that will leave you craving more!
Why You’ll Love This Recipe
- Easy to Make: With simple ingredients and straightforward steps, you can whip up these brownies in no time.
- Deliciously Addictive: The combination of banana and brown butter frosting creates a flavor explosion that’s hard to resist.
- Versatile Treat: These brownies are perfect for any occasion—whether it’s a birthday party or an afternoon snack.
- No Special Ingredients Needed: You can find all the ingredients easily at your local grocery store.
- Perfectly Moist: Thanks to the ripe bananas and sour cream, these brownies stay moist and flavorful.
Tools and Preparation
Before diving into the recipe, gather your tools. Having everything ready will make the process smoother and more enjoyable.
Essential Tools and Equipment
- Mixing bowls
- Measuring cups and spoons
- Whisk
- Rubber spatula
- Baking pan (9×13-inch)
- Parchment paper
Importance of Each Tool
- Mixing bowls: Essential for combining ingredients thoroughly without spills.
- Measuring cups and spoons: Ensures accurate ingredient portions for consistent results.
- Whisk: Helps blend wet ingredients smoothly for better texture in the final product.
- Baking pan (9×13-inch): The right size ensures even baking of your banana bread brownies.

Ingredients
These banana bread brownies with brown butter frosting are so addictive! Learn the easy recipe, and prepare to be hooked.
For the Brownies
- 1 1/2 cups granulated sugar
- 1 cup sour cream
- 1/2 cup butter, softened
- 2 large eggs
- 3-4 ripe bananas, mashed
- 2 teaspoons vanilla extract
- 2 cups all-purpose flour
- 1 teaspoon baking soda
- 3/4 teaspoon salt
- 1/2 cup chopped walnuts
For the Frosting
- 1/4 cup butter
- 3-4 cups powdered sugar
- 1 1/2 teaspoons vanilla extract
- 2-3 tablespoons milk
How to Make Banana Bread Brownies
Step 1: Preheat the Oven
Preheat the oven to 375 degrees Fahrenheit. Grease and line a 9×13-inch pan with cooking spray and parchment paper, leaving an overhang on the sides.
Step 2: Make the Brownie Batter
- In a large bowl, beat together the granulated sugar, sour cream, softened butter, and eggs until creamy.
- Mix in the mashed bananas and vanilla extract.
- Sift in the flour, baking soda, and salt. Gently mix with a spatula until well combined.
- Fold in the chopped walnuts.
Step 3: Bake the Brownies
Spread the batter evenly into the prepared pan. Bake for 30-35 minutes or until golden brown. Allow cooling in the pan for 10 minutes before frosting.
Step 4: Prepare the Frosting
While the brownies cool, make the frosting:
1. In a large pan over medium heat, melt the butter until it boils and browns, stirring frequently.
2. Remove from heat and transfer to a large bowl.
3. Add half of the powdered sugar along with vanilla extract and milk. Whisk until smooth; add more powdered sugar as needed.
Step 5: Frost and Serve
Spread frosting over warm banana bread brownies. Cut into squares and serve them up! Enjoy every bite of these delightful treats!
How to Serve Banana Bread Brownies
These banana bread brownies are deliciously versatile and can be enjoyed in various ways. Whether you’re hosting a gathering or indulging in a cozy night in, here are some fun serving suggestions.
A La Mode
- Top each brownie with a scoop of your favorite vanilla ice cream for a delightful contrast of warm and cold.
With Fresh Fruit
- Serve alongside sliced strawberries, blueberries, or bananas for an added burst of freshness that complements the flavors.
Drizzled with Caramel Sauce
- Add a drizzle of warm caramel sauce on top of the brownies for an indulgent treat that enhances their rich taste.
Whipped Cream Topping
- A dollop of homemade whipped cream can elevate the dessert, making it feel extra special and decadent.
Coffee Pairing
- Serve these brownies with a hot cup of coffee or espresso to balance the sweetness and enhance your dessert experience.
How to Perfect Banana Bread Brownies
To ensure your banana bread brownies turn out perfectly every time, consider these helpful tips.
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Use Ripe Bananas: The riper the bananas, the sweeter and more flavorful your brownies will be. Look for bananas with brown spots for optimal results.
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Don’t Overmix: When combining the dry ingredients, mix just until combined. Overmixing can lead to dense brownies.
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Check Doneness Early: Ovens vary in temperature; start checking your brownies a few minutes before the suggested baking time to avoid overbaking.
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Cool Before Frosting: Allow the brownies to cool slightly before adding frosting. This will prevent it from melting and maintain its texture.
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Experiment with Add-ins: Feel free to add chocolate chips or dried fruits for extra flavor and texture variations.
Best Side Dishes for Banana Bread Brownies
Pairing side dishes with banana bread brownies can enhance your dessert experience. Here are some delightful options:
- Vanilla Ice Cream: A classic pairing that adds creaminess and balances the sweetness of the brownies.
- Fresh Berries: Strawberries, raspberries, or blueberries provide a refreshing contrast to rich desserts.
- Coconut Whipped Cream: For a dairy-free option, coconut whipped cream adds a tropical twist that complements banana flavors.
- Caramel Sauce: Warm caramel sauce drizzled on top creates an indulgent touch to each bite.
- Chocolate Sauce: A drizzle of chocolate sauce can intensify the chocolate flavor in your brownies.
- Nut Butter Spread: Spread almond or peanut butter on top for added richness and protein.
- Chai-Spiced Tea: A warm cup of chai tea offers spices that pair wonderfully with sweet desserts like these brownies.
- Mint Tea: Refreshing mint tea helps cleanse the palate after enjoying a rich treat like banana bread brownies.
Common Mistakes to Avoid
It’s easy to make mistakes when baking banana bread brownies. Here are some common pitfalls and tips to avoid them.
- Bold measurements: Not measuring ingredients accurately can lead to poor texture and flavor. Use measuring cups and spoons for accuracy.
- Bold overmixing: Mixing the batter too much can cause dense brownies. Mix just until combined for a light, fluffy texture.
- Bold incorrect oven temperature: Baking at the wrong temperature will affect cooking time and doneness. Always preheat your oven for even baking.
- Bold not cooling before frosting: Frosting warm brownies can cause the frosting to melt. Allow your brownies to cool completely before adding frosting.

Storage & Reheating Instructions
Refrigerator Storage
- Store banana bread brownies in an airtight container.
- They will last for up to 5 days in the refrigerator.
Freezing Banana Bread Brownies
- Freeze brownies in a single layer on a baking sheet before transferring them to a freezer-safe container.
- They can be frozen for up to 3 months.
Reheating Banana Bread Brownies
- Oven: Preheat the oven to 350°F (175°C) and heat the brownies for about 10 minutes.
- Microwave: Warm individual pieces in the microwave for 15-20 seconds until heated through.
- Stovetop: Place a brownie in a pan over low heat, cover, and warm gently until heated through.
Frequently Asked Questions
What are Banana Bread Brownies?
Banana bread brownies are a delightful blend of banana bread and brownie textures, topped with creamy brown butter frosting.
How can I customize my Banana Bread Brownies?
You can add nuts, chocolate chips, or even spices like cinnamon or nutmeg to enhance the flavor of your banana bread brownies.
Can I make these Banana Bread Brownies gluten-free?
Yes! Substitute all-purpose flour with a gluten-free flour blend for delicious gluten-free banana bread brownies.
How do I know when my Banana Bread Brownies are done?
Insert a toothpick into the center; it should come out clean or with a few moist crumbs but not wet batter.
Final Thoughts
These banana bread brownies strike the perfect balance between rich flavors and moist texture. Their versatility allows you to customize them to your liking. Try adding your favorite nuts or chocolate chips for an extra treat!
Banana Bread Brownies
- Total Time: 50 minutes
- Yield: Approximately 12 servings 1x
Description
Delight in the rich flavors of these Banana Bread Brownies, a scrumptious treat that combines the moistness of ripe bananas with a luscious brown butter frosting. Perfect for any gathering or a cozy evening at home, these brownies are simple to make and guaranteed to satisfy your sweet tooth. Crafted with everyday ingredients, this recipe ensures you can whip up a batch anytime you crave a unique dessert. Indulge in this easy-to-follow recipe that transforms traditional banana bread into fudgy brownie goodness!
Ingredients
- 1 1/2 cups granulated sugar
- 1 cup sour cream
- 1/2 cup butter, softened
- 2 large eggs
- 3–4 ripe bananas, mashed
- 2 teaspoons vanilla extract
- 2 cups all-purpose flour
- 1 teaspoon baking soda
- 3/4 teaspoon salt
- 1/2 cup chopped walnuts
- 1/4 cup butter (for frosting)
- 3–4 cups powdered sugar
- 1 1/2 teaspoons vanilla extract (for frosting)
- 2–3 tablespoons milk
Instructions
- Preheat your oven to 375°F (190°C). Grease and line a 9×13-inch baking pan with parchment paper.
- In a large bowl, mix granulated sugar, sour cream, softened butter, and eggs until creamy.
- Stir in mashed bananas and vanilla extract.
- Sift in flour, baking soda, and salt. Gently mix until combined, then fold in walnuts if using.
- Spread the batter evenly in the prepared pan and bake for 30-35 minutes or until golden brown. Allow cooling for 10 minutes before frosting.
- For the frosting, melt butter over medium heat until browned. Combine with powdered sugar, vanilla extract, and milk; whisk until smooth.
- Frost the warm brownies and cut into squares before serving.
- Prep Time: 15 minutes
- Cook Time: 35 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 brownie (45g)
- Calories: 210
- Sugar: 22g
- Sodium: 130mg
- Fat: 8g
- Saturated Fat: 5g
- Unsaturated Fat: 2g
- Trans Fat: 0g
- Carbohydrates: 35g
- Fiber: 1g
- Protein: 3g
- Cholesterol: 25mg



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