These Banana Bread Brownies with brown butter frosting are a delightful twist on a classic favorite. Perfect for any occasion, these treats are not only rich and moist but also incredibly easy to make. The combination of ripe bananas and a luscious brown butter frosting makes them irresistible. Whether you serve them at a party or enjoy them as an everyday snack, these brownies are sure to impress!
Why You’ll Love This Recipe
- Easy Preparation – This recipe comes together quickly, making it ideal for both novice and experienced bakers.
- Delicious Flavor – The sweet bananas paired with the nutty brown butter create a flavor profile that’s simply unforgettable.
- Perfect for Any Occasion – Whether it’s a family gathering, potluck, or just a cozy night in, these brownies fit right in.
- Versatile Treat – Enjoy them warm with frosting or plain for a quick snack; they’re great either way!
- Crowd-Pleaser – These banana bread brownies are sure to win over friends and family alike with their delightful taste.
Tools and Preparation
Before diving into the delicious recipe, let’s gather the tools you will need to create these banana bread brownies. Having the right equipment ensures everything goes smoothly.
Essential Tools and Equipment
- 9×13-inch baking pan
- Mixing bowls
- Whisk
- Spatula
- Parchment paper
Importance of Each Tool
- 9×13-inch baking pan – This size is perfect for achieving the right thickness in your brownies.
- Mixing bowls – Having multiple sizes allows you to mix ingredients without any mess.
- Whisk – A whisk helps incorporate air into your batter, resulting in fluffier brownies.
- Spatula – Ideal for folding ingredients gently and ensuring everything is well combined.

Ingredients
To make these scrumptious banana bread brownies, gather the following ingredients:
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. Prepare a 9×13-inch pan by greasing it with cooking spray and lining it with parchment paper, leaving an overhang on the sides for easy removal later.
Step 2: Make the Brownie Batter
In a large mixing bowl, beat together:
1. Combine granulated sugar, sour cream, softened butter, and eggs until creamy.
2. Mix in the mashed bananas and vanilla extract until well incorporated.
Step 3: Add Dry Ingredients
Sift in:
1. Add all-purpose flour, baking soda, and salt.
2. Mix gently using a spatula until just combined; be careful not to overmix.
3. Fold in the chopped walnuts for added texture.
Step 4: Bake the Brownies
Spread the batter evenly into your prepared pan. Bake for 30–35 minutes or until golden brown on top. Once done, allow them to cool in the pan for about 10 minutes before frosting.
Step 5: Prepare the Frosting
While your brownies cool:
1. Heat the butter in a large pan over medium heat until it bubbles and turns golden brown; stir frequently to prevent burning.
2. Transfer browned butter to a mixing bowl. Add half of the powdered sugar, along with the remaining vanilla extract and some milk. Whisk until smooth.
Step 6: Frost and Serve
Gradually add more powdered sugar as needed to achieve your desired consistency. Spread this delicious frosting over your warm banana bread brownies. Cut into squares, serve, and enjoy every bite!
How to Serve Banana Bread Brownies
Banana bread brownies are a delightful treat that can be enjoyed in various ways. Whether it’s for breakfast, dessert, or a snack, there are plenty of options to enhance your experience.
With Fresh Fruit
- Sliced Strawberries – Fresh strawberries add a burst of flavor and color to your brownies.
- Banana Slices – Complement the banana flavor with additional fresh banana slices on top.
- Berries Medley – A mix of blueberries and raspberries provides tartness that balances the sweetness.
Topped with Ice Cream
- Vanilla Ice Cream – A classic choice that pairs perfectly with the rich flavors of the brownies.
- Chocolate Ice Cream – For chocolate lovers, this indulgence creates a decadent dessert.
- Coconut Sorbet – A dairy-free option that offers a refreshing contrast to the warm brownies.
Drizzled with Sauces
- Chocolate Sauce – A drizzle of chocolate sauce enhances the richness of the brownies.
- Caramel Sauce – Add sweet caramel for an extra layer of indulgence.
- Maple Syrup – For a unique twist, drizzle some maple syrup for a hint of earthiness.
How to Perfect Banana Bread Brownies
Making perfect banana bread brownies is easier than you think! Here are some tips to ensure your brownies turn out delicious every time.
- Use Ripe Bananas – The riper the bananas, the sweeter and more flavorful your brownies will be.
- Don’t Overmix – Mix until just combined to keep your brownies tender and moist.
- Grease Properly – Ensure your pan is well-greased or lined to prevent sticking when serving.
- Check for Doneness Early – Start checking around 25 minutes; overbaking can lead to dry brownies.
- Cool Before Frosting – Allowing your brownies to cool prevents the frosting from melting into them.
Best Side Dishes for Banana Bread Brownies
Pairing side dishes with banana bread brownies can elevate your dessert experience. Here are some tasty options.
- Greek Yogurt – Creamy and tangy yogurt complements the sweetness of the brownies beautifully.
- Nut Butter Spread – Almond or peanut butter adds protein and a nutty flavor that works well with bananas.
- Fruit Salad – A refreshing fruit salad balances the rich flavors and adds a healthy touch.
- Chia Seed Pudding – This light side dish offers a nutritious contrast and can be flavored with vanilla or cocoa.
- Granola Parfait – Layer granola, yogurt, and berries for a crunchy and creamy addition alongside your brownies.
- Coffee or Tea – A warm cup of coffee or herbal tea enhances the flavors while providing a cozy atmosphere.
Common Mistakes to Avoid
When making Banana Bread Brownies, there are a few common pitfalls to watch out for. Here are some mistakes to avoid:
- Using unripe bananas: Unripe bananas lack sweetness and moisture. Always choose ripe, spotty bananas for the best flavor and texture.
- Not measuring ingredients accurately: Inaccurate measurements can lead to dense or dry brownies. Use proper measuring cups and spoons for precision.
- Overmixing the batter: Overmixing can result in tough brownies. Mix just until combined for a lighter texture.
- Skipping the cooling time: Frosting warm brownies can cause the frosting to melt. Allow them to cool slightly before applying frosting for the best results.
- Not greasing the pan properly: Failing to grease and line your baking pan can lead to sticking. Ensure you use cooking spray and parchment paper for easy removal.

Storage & Reheating Instructions
Refrigerator Storage
- Store in an airtight container for up to 5 days.
- Place parchment paper between layers if stacking to prevent sticking.
Freezing Banana Bread Brownies
- Wrap tightly in plastic wrap or aluminum foil before placing them in a freezer-safe bag.
- They can be frozen for up to 3 months.
Reheating Banana Bread Brownies
- Oven: Preheat the oven to 350°F (175°C) and warm brownies for about 10-15 minutes.
- Microwave: Heat individual servings on medium power for 15-20 seconds until warm.
- Stovetop: Place in a covered skillet on low heat for about 5 minutes.
Frequently Asked Questions
Here are some common questions about Banana Bread Brownies:
Can I use frozen bananas for this recipe?
Yes! Thaw frozen bananas completely, drain excess liquid, and mash them before using.
How do I know when my Banana Bread Brownies are done?
Insert a toothpick into the center; if it comes out clean or with a few moist crumbs, they are ready.
Can I add chocolate chips?
Absolutely! Chocolate chips make a delicious addition; fold them in with the walnuts.
How can I customize my Banana Bread Brownies?
You can swap walnuts for pecans, add spices like cinnamon, or even include dried fruits for extra flavor.
What is the best way to serve Banana Bread Brownies?
Serve warm with a scoop of ice cream or enjoy them plain as a delightful treat!
Final Thoughts
These Banana Bread Brownies are not only delicious but also versatile. You can easily customize them with various nuts or chocolate. Their rich flavor combined with the brown butter frosting makes them irresistible. Give this recipe a try, and you’ll have a sweet treat that everyone will love!
Banana Bread Brownies
Indulge in the rich and moist delight of Banana Bread Brownies topped with a luscious brown butter frosting. This innovative twist on the classic banana bread combines ripe bananas and nutty flavors to create an irresistible treat perfect for any occasion. Whether you’re hosting a gathering or simply satisfying your sweet tooth, these brownies are easy to make and sure to impress family and friends alike. Enjoy them warm or at room temperature, and feel free to customize with your favorite toppings for an extra special touch!
- 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 mashed bananas
- 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 (for frosting)
Instructions
- Preheat your oven to 375°F (190°C). Grease a 9×13-inch baking pan and line it with parchment paper.
- In a large mixing bowl, cream together the granulated sugar, sour cream, softened butter, and eggs until smooth. Mix in the mashed bananas and vanilla extract.
- Sift in the all-purpose flour, baking soda, and salt. Gently mix until combined, then fold in the chopped walnuts.
- Pour the batter into the prepared pan and spread evenly. Bake for 30–35 minutes or until golden brown. Allow cooling for about 10 minutes before frosting.
- For the frosting, heat butter in a saucepan until it turns golden brown. Transfer to a bowl, add powdered sugar, vanilla extract, and milk; whisk until smooth. Frost cooled brownies.
Nutrition
- Serving Size: 1 brownie (60g)
- Calories: 230
- Sugar: 18g
- Sodium: 150mg
- Fat: 10g
- Saturated Fat: 6g
- Unsaturated Fat: 3g
- Trans Fat: 0g
- Carbohydrates: 33g
- Fiber: 1g
- Protein: 3g
- Cholesterol: 30mg



Leave a Comment