Irresistible Banana Bread Brownies with Brown Butter Frosting
If you’re looking for a dessert that combines the best of both worlds, then these Irresistible Banana Bread Brownies with Brown Butter Frosting are just what you need! Imagine sinking your teeth into a rich, chocolatey brownie infused with the delightful flavor of ripe bananas. This recipe is a family favorite in my house, cherished for its warm, comforting taste and easy preparation. Whether you’re whipping them up for a busy weeknight treat or sharing them at a gathering, these brownies are sure to bring smiles all around.
What really makes this recipe special is its versatility. You can enjoy it as a cozy dessert after dinner or even serve it at brunch alongside coffee. Plus, the addition of browned butter frosting takes it to another level of deliciousness that you won’t want to miss!
Why You’ll Love This Recipe
- Super Easy: With just one bowl required, clean-up is a breeze!
- Family Favorite: Everyone from kids to adults loves these sweet, moist bars.
- Perfect for Any Occasion: Great for brunches, potlucks, or satisfying sweet cravings.
- Make-Ahead Friendly: Bake a batch ahead of time and store them for later indulgence.
- Deliciously Flavorful: The combination of banana and chocolate creates an irresistible treat.

Ingredients You’ll Need
This recipe calls for simple, wholesome ingredients that you probably already have in your kitchen. Let’s gather everything we need to create these delicious Banana Bread Brownies!
For the Brownies:
- 1½ cups sugar
- 1 cup sour cream
- ½ cup butter, softened
- 1¾ cups ripe bananas
- 2 tsp vanilla extract
- 2 cups all-purpose flour
- 1 tsp baking soda
- ¾ tsp salt
- ½ cup chopped walnuts (optional)
For the Frosting:
- ½ cup butter
- 4 cups powdered sugar
- 1½ tsp vanilla extract
- 3 Tbsp milk
Variations
Feel free to get creative with this recipe! Here are some fun variations you can try:
- Add Chocolate Chips: Stir in ½ cup of chocolate chips for extra chocolaty goodness.
- Use Different Nuts: Swap walnuts for pecans or leave them out entirely if preferred.
- Make It Vegan: Substitute sour cream with plant-based yogurt and use vegan butter.
- Spice It Up: Add cinnamon or nutmeg for a warm spice flavor that enhances the banana.
How to Make Irresistible Banana Bread Brownies with Brown Butter Frosting
Step 1: Preheat Your Oven
First things first, preheat your oven to 375°F (190°C). Greasing and flouring your 15×10 pan will help prevent sticking and ensure those brownies slide out easily when they’re done baking.
Step 2: Mix the Wet Ingredients
In a large bowl, beat together the sugar, sour cream, softened butter, and mashed ripe bananas until creamy. This step is crucial because it helps to create a smooth batter that packs in moisture and flavor.
Step 3: Add Dry Ingredients
Now it’s time to mix in the vanilla extract followed by the flour, baking soda, and salt. Make sure there are no lumps—this will keep your brownies from becoming dense. If you’re using walnuts, gently fold them in at this stage; they add a lovely crunch!
Step 4: Bake and Cool
Pour the batter into your prepared pan and spread it evenly. Bake for 20–25 minutes until golden brown. Keep an eye on them—overbaking can lead to dryness! Once done, let them cool slightly before adding the frosting.
Step 5: Prepare the Frosting
For the frosting, brown half a cup of butter in a saucepan over medium heat until it turns golden brown and smells nutty. Remove from heat and stir in powdered sugar, vanilla extract, and milk until smooth. This step brings out amazing flavors that complement our brownies perfectly!
Step 6: Frost and Enjoy!
Spread that luscious browned butter frosting over your warm brownies. Allow everything to cool completely before slicing into squares. Get ready to enjoy bites of pure bliss!
These Irresistible Banana Bread Brownies with Brown Butter Frosting are destined to become your go-to recipe for any occasion!
Pro Tips for Making Irresistible Banana Bread Brownies with Brown Butter Frosting
If you want to elevate your Banana Bread Brownies to the next level, these tips will help you create a truly unforgettable treat!
- Use Overripe Bananas: The riper the bananas, the sweeter and more flavorful your brownies will be. Look for bananas with lots of brown spots for maximum flavor.
- Don’t Overmix: When combining your dry and wet ingredients, mix just until everything is combined. This helps keep your brownies moist and tender rather than dense.
- Check for Doneness: Ovens can vary, so check your brownies a few minutes before the suggested baking time. A toothpick inserted in the center should come out with a few moist crumbs but not wet batter.
- Cool Before Frosting: Allow your brownies to cool slightly before adding the frosting. This prevents the frosting from melting into the brownies and helps create a lovely layer on top.
- Experiment with Mix-Ins: While walnuts are delicious, feel free to mix it up! Try adding chocolate chips, shredded coconut, or even dried fruit for added texture and flavor.
How to Serve Irresistible Banana Bread Brownies with Brown Butter Frosting
These Banana Bread Brownies are not only delicious but also visually appealing! Here are some delightful ways to serve them that will impress your family and friends.
Garnishes
- Chopped Nuts: Sprinkle some extra chopped walnuts or pecans on top of the frosting for a crunchy texture contrast.
- Fresh Banana Slices: Add a couple of banana slices on top of each brownie for a fresh look and an extra hint of banana flavor.
- Drizzle of Caramel Sauce: For an indulgent touch, drizzle some caramel sauce over the frosted brownies just before serving.
Side Dishes
- Vanilla Ice Cream: A scoop of creamy vanilla ice cream pairs wonderfully with the warm brownies, creating a delightful contrast in temperature.
- Fresh Berries: Serve with a side of mixed berries like strawberries, blueberries, or raspberries. Their tartness complements the sweetness of the brownies beautifully.
- Coffee or Tea: A warm cup of coffee or tea makes an excellent pairing. The rich flavors enhance the experience while providing a cozy atmosphere.
- Yogurt Parfait: Layer some yogurt with granola and fruit for a refreshing side dish that balances out the sweetness of your brownies.
With these serving suggestions and tips, you’re all set to enjoy your Irresistible Banana Bread Brownies with Brown Butter Frosting in style! Happy baking!

Make Ahead and Storage
These Irresistible Banana Bread Brownies with Brown Butter Frosting are perfect for meal prep! You can easily make them in advance, store them, and enjoy their delightful flavors throughout the week.
Storing Leftovers
- Allow brownies to cool completely before storing.
- Place them in an airtight container at room temperature for up to 3 days.
- For longer freshness, refrigerate them for up to a week.
Freezing
- Cut the brownies into squares before freezing for easier portions.
- Wrap each square tightly in plastic wrap or aluminum foil.
- Place wrapped brownies in a freezer-safe bag or container for up to 3 months.
Reheating
- To thaw frozen brownies, leave them in the refrigerator overnight or let them sit at room temperature for a couple of hours.
- For a warm treat, reheat individual squares in the microwave for about 10-15 seconds. Enjoy the gooey goodness!
FAQs
Have questions about making these delicious treats? Here are some common inquiries!
Can I use other nuts instead of walnuts in the Irresistible Banana Bread Brownies with Brown Butter Frosting?
Absolutely! Feel free to substitute walnuts with pecans, almonds, or even omit the nuts entirely if you prefer a nut-free version. Just adjust according to your tastes!
How can I make my Irresistible Banana Bread Brownies with Brown Butter Frosting more chocolatey?
You can add chocolate chips to the batter! About 1 cup of semi-sweet or dark chocolate chips will complement the banana flavor beautifully.
Can I replace sour cream with yogurt?
Yes! Plain yogurt is a great alternative to sour cream in this recipe. It will maintain the moisture and tanginess that makes these brownies irresistible.
Final Thoughts
I hope you find joy in making these Irresistible Banana Bread Brownies with Brown Butter Frosting! They combine beloved flavors into a delightful dessert that’s sure to become a favorite in your kitchen. Don’t hesitate to share your creations with friends and family – they’re perfect for any occasion. Happy baking!
Irresistible Banana Bread Brownies with Brown Butter Frosting
Indulge in the delightful fusion of flavors with these Irresistible Banana Bread Brownies topped with a luscious Brown Butter Frosting. This recipe combines the rich, chocolatey goodness of brownies with the comforting essence of banana bread, creating a dessert that is both moist and satisfying. Perfect for any occasion—whether it’s a busy weeknight craving or a gathering with friends—these brownies are sure to please everyone. With simple ingredients and easy preparation, you can whip up this delicious treat in no time. The added brown butter frosting elevates each bite, making them irresistible. Don’t miss out on this wholesome dessert that showcases the best of both worlds!
- Prep Time: 15 minutes
- Cook Time: 25 minutes
- Total Time: 40 minutes
- Yield: Approximately 24 servings 1x
- Category: Dessert
- Method: Baking
- Cuisine: American
Ingredients
- 1½ cups sugar
- 1 cup sour cream
- ½ cup butter, softened
- 1¾ cups ripe bananas, mashed
- 2 tsp vanilla extract
- 2 cups all-purpose flour
- 1 tsp baking soda
- ¾ tsp salt
- ½ cup chopped walnuts (optional)
Instructions
- Preheat your oven to 375°F (190°C) and prepare a 15×10 inch pan by greasing and flouring it.
- In a large bowl, mix together sugar, sour cream, softened butter, and mashed bananas until smooth.
- Stir in vanilla extract, then add flour, baking soda, and salt until just combined. Fold in walnuts if using.
- Pour the batter into the prepared pan and bake for 20–25 minutes or until golden brown.
- For the frosting, brown the butter in a saucepan until golden; combine with powdered sugar, vanilla extract, and milk until smooth.
- Spread frosting over cooled brownies, let set before slicing into squares.
Nutrition
- Serving Size: 1 brownie (45g)
- Calories: 220
- Sugar: 18g
- Sodium: 150mg
- Fat: 8g
- Saturated Fat: 5g
- Unsaturated Fat: 3g
- Trans Fat: 0g
- Carbohydrates: 34g
- Fiber: 1g
- Protein: 3g
- Cholesterol: 15mg
