Moist, Sweet, and Topped with Buttery Browned Frosting
If you’ve ever found yourself torn between banana bread and a rich, buttery blondie, this recipe is the answer to your dessert dreams. These Banana Bread Brownies are the best of both worlds—soft, dense, and full of banana flavor, with a melt-in-your-mouth texture and a luscious layer of browned butter frosting to seal the deal.
Perfect for using up ripe bananas, these brownies are easy to make, incredibly moist thanks to sour cream and bananas, and loaded with flavor. Whether you’re baking for a potluck, brunch, or just to treat yourself, these are sure to become a fast favorite in your dessert rotation.
Ingredients
For the Brownies:
- 2 eggs
- 3 ripe bananas, mashed
- 1 1/2 cups sugar
- 1 cup sour cream
- 1/2 cup butter, softened
- 2 teaspoons vanilla extract
- 2 cups all-purpose flour
- 1 teaspoon baking soda
- 3/4 teaspoon salt
- 1/2 cup walnuts, chopped (optional but recommended)
For the Frosting:
- 1/2 cup butter
- 3 cups powdered sugar
- 1 1/2 teaspoons vanilla extract
- 3 tablespoons milk
Tips for the Best Banana Bread Brownies
- Use very ripe bananas for the best natural sweetness and banana flavor.
- Don’t skip the sour cream! It adds incredible moisture and richness to the brownies.
- Brown your butter carefully for the frosting. Once it turns golden and smells nutty, remove it immediately to avoid burning.
- Frost while warm, not hot. This helps the frosting spread and soak into the top just slightly for a smooth finish.
- Add-ins: Feel free to mix in chocolate chips, chopped pecans, or even a swirl of peanut butter before baking for a twist.
Instructions
- Preheat and Prep:
Preheat your oven to 375°F (190°C). Grease a 13 x 9-inch baking pan and set it aside. - Make the Brownie Batter:
In a large mixing bowl, beat together the sugar, sour cream, softened butter, and eggs until smooth and creamy.
Add in the mashed bananas and vanilla extract and mix well.
Stir in the flour, baking soda, and salt. Mix for about 1 minute until just combined.
Fold in the chopped walnuts (if using). - Bake:
Pour the batter into the prepared baking dish and spread evenly.
Bake for 25 minutes, or until the top is golden brown and a toothpick inserted into the center comes out clean. - Cool Slightly:
Let the brownies cool slightly until just warm, but not hot. This will help the frosting spread smoothly and melt just slightly into the surface. - Prepare the Frosting:
In a large saucepan, melt the butter over medium heat until it turns a rich golden-brown color and gives off a nutty aroma (about 5–7 minutes). Watch carefully to avoid burning.
Remove from heat and immediately whisk in the powdered sugar.
Add milk, one tablespoon at a time, until the frosting reaches a smooth, spreadable consistency. Stir in the vanilla extract. - Frost and Cool:
Pour the warm frosting over the warm banana brownies and use a spatula to spread evenly.
Allow the dessert to cool completely before cutting into squares.
Prep Time: 15 minutes
Cooking Time: 25 minutes
Total Time: 40 minutes
Kcal: 350 kcal per serving
Servings: 12 brownies
Frequently Asked Questions (FAQ)
Q: Can I use yogurt instead of sour cream?
A: Yes, plain Greek yogurt can be used as a substitute for sour cream with similar texture and moisture.
Q: How should I store these brownies?
A: Store in an airtight container at room temperature for up to 3 days, or refrigerate for up to 5 days. They can also be frozen (without frosting) for up to 2 months.
Q: Can I skip the frosting?
A: You can, but the browned butter frosting is what makes this recipe truly indulgent. If you’d like a lighter option, a dusting of powdered sugar works too.
Q: Can I use a different nut?
A: Absolutely. Pecans, hazelnuts, or even almonds can be used if you don’t have walnuts on hand.
Q: Can I double the recipe?
A: Yes—just bake it in a larger pan (or two 9×13 pans) and check for doneness, as baking time may increase slightly.
Conclusion
These Banana Bread Brownies are a next-level treat—soft, rich, nutty, and covered in silky browned butter frosting that takes every bite over the top. Whether you’re baking for a special gathering or just using up those overripe bananas, this recipe turns simple ingredients into something absolutely unforgettable.
Enjoy them warm, cold, or at room temperature—they’re always moist, flavorful, and completely crave-worthy. One slice is never enough!