Banana Bread Brownies
These Banana Bread Brownies with brown butter frosting are a delightful twist on classic banana bread. They’re moist, rich, and topped with a luscious frosting that makes them perfect for any occasion, from family gatherings to cozy evenings at home. The combination of ripe bananas and walnuts creates a flavor profile that is both comforting and indulgent. Once you try these brownies, they’ll become your go-to recipe for satisfying your sweet tooth.
Why You’ll Love This Recipe
- Easy to Make: This recipe requires simple ingredients and minimal preparation time, making it perfect for bakers of all levels.
- Rich Flavor: The addition of brown butter frosting enhances the natural sweetness of the bananas, creating a decadent treat.
- Versatile Dessert: Whether for a party, potluck, or just an everyday treat, these brownies fit right in with any dessert table.
- Perfectly Moist: The combination of ripe bananas and sour cream ensures that these brownies are incredibly moist and tender.
- Nutty Crunch: Chopped walnuts add a delightful crunch that complements the soft texture of the brownies.
Tools and Preparation
Before you start baking these delicious banana bread brownies, gather your tools to make the process smoother.
Essential Tools and Equipment
- Mixing bowl
- Whisk
- Spatula
- 9×13-inch baking pan
- Parchment paper
- Saucepan
Importance of Each Tool
- Mixing bowl: A sturdy mixing bowl allows you to combine all ingredients thoroughly without spills.
- Whisk: Ideal for blending wet ingredients smoothly, ensuring an even batter.
- Spatula: Great for folding in dry ingredients gently while avoiding overmixing.
- 9×13-inch baking pan: The perfect size for even baking and easy cutting into servings.

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 your oven to 375 degrees Fahrenheit. Grease and line a 9×13-inch pan with cooking spray and parchment paper. Leave an overhang on the sides for easy removal later.
Step 2: Prepare the Batter
In a large bowl:
1. Beat together the granulated sugar, sour cream, softened butter, and eggs until creamy.
2. Mix in the mashed bananas and vanilla extract until well combined.
Step 3: Combine Dry Ingredients
Sift in:
1. The all-purpose flour,
2. Baking soda,
3. Salt.
Gently mix with a spatula until everything is just combined. Fold in the chopped walnuts at this stage.
Step 4: Bake the Brownies
Spread the batter evenly in your prepared pan. Bake for about 30-35 minutes or until they turn golden brown. Allow them to cool in the pan for about 10 minutes before frosting.
Step 5: Make the Frosting
While waiting for the brownies to cool:
1. In a saucepan over medium heat, melt the butter until it boils and browns slightly.
2. Once browned, transfer it to a large bowl.
Step 6: Finish the Frosting
To your bowl of browned butter:
1. Add half of the powdered sugar along with vanilla extract and milk.
2. Whisk until smooth; add more powdered sugar as needed to reach your desired consistency.
3. Spread this delicious frosting over your warm banana bread brownies before serving!
Enjoy these delightful banana bread brownies as a perfect dessert treat!
How to Serve Banana Bread Brownies
Banana bread brownies are a delightful treat that can be served in various ways. Whether you’re hosting a gathering or enjoying a cozy night in, these brownies can easily be paired with different accompaniments to elevate your dessert experience.
With Fresh Fruit
- Sliced Strawberries – The sweetness of strawberries complements the rich flavor of banana bread brownies.
- Blueberries – Fresh blueberries add a burst of juiciness and a pop of color to your plate.
- Banana Slices – Enhance the banana flavor by topping the brownies with fresh banana slices.
A Scoop of Ice Cream
- Vanilla Ice Cream – Classic vanilla pairs perfectly, creating a creamy contrast to the chewy brownie texture.
- Chocolate Ice Cream – For chocolate lovers, this combination adds an extra layer of indulgence.
- Coconut Ice Cream – The tropical notes of coconut will enhance the bananas’ flavor.
Drizzled with Sauce
- Caramel Sauce – A warm drizzle of caramel adds sweetness and richness that elevates each bite.
- Chocolate Syrup – Pouring chocolate syrup over the brownies brings an irresistible indulgence.
How to Perfect Banana Bread Brownies
To make your banana bread brownies truly unforgettable, follow these simple tips for the best results.
- Use Ripe Bananas – The riper the bananas, the sweeter and more flavorful your brownies will be.
- Don’t Overmix – Mix just until combined to maintain a tender texture; overmixing can lead to dense brownies.
- Check for Doneness Early – Every oven is different; check your brownies a few minutes before the suggested bake time to avoid overcooking.
- Cool Before Frosting – Allow the brownies to cool completely before applying frosting for a smooth finish.
Best Side Dishes for Banana Bread Brownies
Pairing side dishes with banana bread brownies can enhance your dessert spread. Here are some great options to consider:
- Fresh Fruit Salad – A mix of seasonal fruits adds freshness and balances out the sweetness of the brownies.
- Yogurt Parfait – Layer yogurt with granola and berries for a tangy contrast that complements the dessert.
- Chia Seed Pudding – This creamy, nutrient-packed pudding offers a healthy side that contrasts well with rich flavors.
- Nut Butter Dip – A bowl of almond or peanut butter allows guests to dip their brownie for added creaminess and protein.
- Cheese Platter – A selection of mild cheeses can provide an interesting savory contrast alongside sweet treats.
- Tea or Coffee – A warm beverage like herbal tea or coffee enhances the flavors and provides a cozy atmosphere during dessert time.
Common Mistakes to Avoid
When baking Banana Bread Brownies, certain pitfalls can lead to less-than-perfect results. Here are some common mistakes and how you can avoid them.
- Boldly Measuring Ingredients: Not measuring ingredients accurately can ruin your brownies. Always use measuring cups and spoons for precision.
- Boldly Skipping the Cooling Time: Frosting warm brownies may cause the frosting to melt off. Allow them to cool adequately before frosting.
- Boldly Overmixing the Batter: Overmixing can lead to dense brownies. Mix just until the ingredients are combined for a lighter texture.
- Boldly Ignoring Ripe Bananas: Using unripe bananas will affect sweetness and flavor. Ensure your bananas are very ripe for the best taste.
- Boldly Choosing the Wrong Baking Pan: A pan that’s too small or too large affects baking time and texture. Stick to a 9×13-inch pan for even baking.

Storage & Reheating Instructions
Refrigerator Storage
- Store Banana Bread Brownies in an airtight container.
- They will last up to 5 days in the refrigerator.
Freezing Banana Bread Brownies
- Wrap brownies tightly in plastic wrap or aluminum foil.
- Freeze for up to 3 months for best quality.
Reheating Banana Bread Brownies
- Oven: Preheat to 350°F and warm brownies for about 10 minutes.
- Microwave: Heat individual servings on high for 15-20 seconds.
- Stovetop: Place brownies in a skillet over low heat, covered, until warmed through.
Frequently Asked Questions
What are Banana Bread Brownies?
Banana Bread Brownies combine the flavors of banana bread with the fudgy texture of brownies, creating a delicious dessert that’s perfect for any occasion.
Can I substitute ingredients in Banana Bread Brownies?
Yes! You can replace walnuts with chocolate chips or other nuts based on your preference.
How do I know when my Banana Bread Brownies are done?
Check if they are golden brown on top and insert a toothpick; it should come out clean when they are ready.
How can I make these Banana Bread Brownies gluten-free?
You can substitute all-purpose flour with gluten-free flour blends to create a gluten-free version of this recipe.
Why do my Banana Bread Brownies turn out dry?
Overbaking is often the cause of dry brownies. Keep an eye on them during the last few minutes of baking.
Final Thoughts
These Banana Bread Brownies are not only delicious but also versatile, allowing you to customize them with various add-ins like nuts or chocolate chips. They make an excellent dessert or snack, so give this easy recipe a try!
Banana Bread Brownies
Indulge in the delightful fusion of flavor and texture with these moist Banana Bread Brownies, topped with a rich brown butter frosting. This easy-to-make dessert combines the natural sweetness of ripe bananas with a hint of nuttiness from walnuts, creating an irresistible treat that’s perfect for any occasion. Whether you’re hosting a gathering or enjoying a cozy night in, this recipe is sure to satisfy your sweet cravings. With its fudgy consistency and luscious frosting, these brownies quickly become a favorite for family and friends alike.
- Prep Time: 15 minutes
- Cook Time: 35 minutes
- Total Time: 50 minutes
- Yield: Approximately 16 servings 1x
- Category: Dessert
- Method: Baking
- Cuisine: American
Ingredients
- 1 1/2 cups granulated sugar
- 1 cup sour cream
- 1/2 cup softened butter
- 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 (for frosting)
- 1 1/2 teaspoons vanilla extract (for frosting)
- 2–3 tablespoons milk (for frosting)
Instructions
- Preheat your oven to 375°F. Grease and line a 9×13-inch baking pan with parchment paper.
- In a large bowl, beat together granulated sugar, sour cream, softened butter, and eggs until creamy. Mix in mashed bananas and vanilla extract.
- Sift in flour, baking soda, and salt. Gently combine using a spatula; fold in walnuts.
- Spread the batter evenly in the prepared pan and bake for 30-35 minutes until golden brown. Allow cooling for about 10 minutes.
- For the frosting: Melt butter in a saucepan over medium heat until browned. Transfer to a bowl, add powdered sugar, vanilla extract, and milk; whisk until smooth. Frost cooled brownies.
Nutrition
- Serving Size: 1 brownie (61g)
- Calories: 245
- Sugar: 18g
- Sodium: 160mg
- Fat: 10g
- Saturated Fat: 6g
- Unsaturated Fat: 4g
- Trans Fat: 0g
- Carbohydrates: 37g
- Fiber: 1g
- Protein: 3g
- Cholesterol: 30mg
