The sweet aroma of warm banana bread wafts through the kitchen, inviting everyone to gather and indulge in a delectable dessert. This recipe for Banana Bread Brownies combines the rich flavors of classic banana bread with the fudginess of brownies, resulting in a luscious treat that takes about an hour to prepare and bake. The best part? The moistness from the bananas ensures every bite is packed with flavor and tenderness, creating a delightful experience for any palate.
This recipe is perfect for anyone craving a tasty treat, especially during family gatherings or cozy evenings at home. It’s an excellent option for using up overripe bananas, and the brownies keep well for a few days, making them a great make-ahead dessert.
Why You’ll Love This Recipe
- The brownies are incredibly moist and rich, thanks to the mashed bananas.
- They’re easy to whip up in under an hour, perfect for unexpected guests.
- The addition of walnuts adds a pleasant crunch in contrast to the soft brownie texture.
- The buttery frosting elevates the flavor, making every bite irresistible.
What You’ll Need
Gather the following ingredients to make these delightful brownies:
For the Brownies:
- 1 cup 200 g granulated sugar
- 1 cup 240 ml sour cream (or plain Greek yogurt)
- ½ cup 113 g unsalted butter, softened
- 2 large eggs
- 4 ripe bananas, mashed (about 2 cups)
- 2 teaspoons pure vanilla extract
- 2 cups 250 g all-purpose flour
- 1 teaspoon baking soda
- ¾ teaspoon salt
- ½ cup 60 g chopped walnuts (optional)
For the Frosting:
- ½ cup 113 g unsalted butter
- 4 cups 480 g powdered sugar
- 1½ teaspoons pure vanilla extract
- 3 tablespoons milk (more if needed for spreading)
Substitutions include yogurt instead of sour cream, and optional nuts can be omitted.
Substitutions & Swaps
- Plain Greek yogurt can replace sour cream.
- Use coconut oil instead of butter.
- Leave out walnuts to avoid nuts.
- Dark chocolate chips can be added for extra flavor.
How to Make It
Follow these simple steps to create your brownies:
Prepare the Pan
Preheat oven to 350°F (175°C). Grease and flour a 9×13-inch baking dish or line with parchment paper.
Make the Banana Brownie Batter
In a large mixing bowl, cream together sugar, sour cream, and softened butter until light and fluffy. Beat in eggs, mashed bananas, and vanilla extract until smooth.
In a separate bowl, whisk together flour, baking soda, and salt. Gradually add dry ingredients to the wet mixture, mixing just until combined. Fold in walnuts, if using.
Bake
Pour batter into the prepared pan and spread evenly. Bake for 25–30 minutes, or until a toothpick inserted in the center comes out clean. Let cool in the pan on a wire rack.
Prepare the Frosting
In a small saucepan, melt butter over medium heat and cook until it turns a light golden brown and smells nutty (about 4–5 minutes). Remove from heat and let cool slightly. Whisk in powdered sugar, vanilla, and milk until smooth and spreadable.
Frost and Serve
Spread frosting over cooled brownies. Cut into squares or bars and serve.
How to Store It
Fridge: Store brownies in an airtight container for up to 5 days.
Freezer: Yes, brownies freeze well for up to 3 months.
Reheat: Warm in the microwave for 10-15 seconds.
Tips for Best Results
- Use very ripe bananas for the sweetest flavor.
- Make sure the butter for the frosting is just slightly cooled but still melted.
- Do not overmix the brownie batter to keep them tender.
- For a richer flavor, opt for browned butter in the frosting.
Serving Suggestions
- Pair with a scoop of vanilla ice cream for a delightful dessert.
- Serve alongside a cup of coffee for a cozy afternoon treat.
- Add a sprinkle of sea salt on top of the frosting for an extra flavor kick.




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