Banana Bread Brownies

Featured in Irresistible Desserts.

These cake-like brownies transform ripe bananas into a moist, sweet treat topped with nutty brown butter frosting - ready in just 35 minutes and perfect for using up overripe bananas.
Ranah
Updated on Fri, 14 Mar 2025 22:12:55 GMT
A square piece of cake with white frosting and brown crust. Pin it
A square piece of cake with white frosting and brown crust. | yummyflavorsrecipes.com

Banana bread brownies transform overripe bananas into a mouthwatering treat that perfectly balances cake-like texture with rich, decadent flavor. These bars take the familiar comfort of banana bread but reshape it into something more indulgent with their fudgy consistency and irresistible brown butter glaze. The addition of Greek yogurt ensures exceptional moisture while providing a subtle tanginess that complements the natural sweetness of ripe bananas.

I've served these at countless gatherings and they disappear faster than any other dessert. My children request them specifically when they spot browning bananas on the counter, and even friends who claim they don't like banana bread have been converted after just one bite of these incredible bars.

Ingredients and Selection Tips

  • Ripe Bananas: Look for bananas with plenty of dark spots or even mostly black peels; these provide the most intense banana flavor and natural sweetness
  • Greek Yogurt: Use full-fat for the richest texture, though reduced-fat works well too; the tanginess balances the sweetness perfectly
  • Butter: Unsalted gives you better control over the final flavor, especially important for the delicate brown butter glaze
  • Vanilla Extract: Pure rather than imitation makes a noticeable difference in both the bars and glaze
  • All-Purpose Flour: Measured properly by spooning into measuring cups rather than scooping directly from the bag ensures proper texture
A close-up of a delicious dessert, a piece of cake with white icing. Pin it
A close-up of a delicious dessert, a piece of cake with white icing. | yummyflavorsrecipes.com

Detailed Cooking Instructions

Step 1:
Begin by preheating your oven to 350°F (175°C) and preparing your baking pan with either parchment paper or a light coating of butter and flour. This preparation is crucial for easy removal after baking and prevents the moist bars from sticking to the pan sides, which would ruin their presentation and texture.
Step 2:
In a large mixing bowl, cream together the softened butter and sugar until the mixture becomes light and fluffy, which usually takes about 3-4 minutes with an electric mixer. This process incorporates air into the batter, creating a more tender crumb in the finished brownies, so avoid rushing this step as it significantly impacts the final texture.
Step 3:
Beat in the Greek yogurt until completely incorporated, then add the eggs one at a time, allowing each to fully integrate before adding the next. This gradual addition prevents the batter from separating and ensures a smooth, consistent texture throughout the brownies that will bake evenly in the oven.
Step 4:
Mash the ripe bananas thoroughly with a fork until they reach a smooth consistency with minimal lumps, then stir them into the batter along with the vanilla extract. The bananas should be evenly distributed throughout the mixture to ensure consistent flavor in every bite of the finished brownies.
Step 5:
In a separate bowl, whisk together the flour, baking soda, and salt until well combined, then gradually fold this dry mixture into the wet ingredients using a spatula rather than an electric mixer. Stop mixing as soon as the flour disappears to avoid developing too much gluten, which would make the brownies tough rather than tender.
Step 6:
If using nuts or chocolate chips, gently fold them into the batter now using just a few strokes to distribute them evenly without overmixing. This folding technique preserves the air incorporated earlier and maintains the light texture that makes these brownies so special.
Step 7:
Pour the completed batter into your prepared baking pan, using a spatula to spread it evenly into the corners and create a level surface. This ensures uniform baking and consistent thickness throughout the entire pan of brownies, preventing some portions from overbaking while others remain underdone.
Step 8:
Bake in the preheated oven for 23-28 minutes, checking for doneness by inserting a toothpick into the center – it should come out with just a few moist crumbs attached rather than wet batter. The brownies will continue cooking slightly from residual heat after removal from the oven, so avoid overbaking which would dry them out.
Step 9:
While the brownies are still warm, prepare the brown butter glaze by melting butter in a small saucepan over medium heat, watching carefully as it foams and then begins to develop golden brown flecks and a nutty aroma. Remove from heat immediately once it reaches this stage to prevent burning, as the transformation happens quickly.
Step 10:
Whisk powdered sugar into the browned butter, followed by vanilla extract and milk, adjusting the consistency as needed by adding more milk for a thinner glaze or more powdered sugar for a thicker frosting-like topping. Pour this glaze over the warm brownies and spread gently with the back of a spoon for a perfectly smooth finish that seeps slightly into the top layer.

These banana bread brownies represent the perfect solution for those inevitable overripe bananas that seem to appear on kitchen counters everywhere. Unlike traditional banana bread, which can sometimes be dense or dry, these bars maintain incredible moisture thanks to the Greek yogurt addition. The texture falls somewhere between cake and brownie – substantial enough to hold its shape when cut, yet tender enough to melt in your mouth with each bite.

The brown butter glaze deserves special attention as it transforms what would already be delicious banana bars into something truly extraordinary. The process of browning butter releases compounds that create a nutty, almost caramelized flavor profile that perfectly complements the banana. This simple step elevates the entire dessert and creates a sophisticated finish that belies how easy it is to prepare.

For those who entertain frequently, these brownies offer tremendous versatility. Their richness makes them satisfying enough to serve as a plated dessert, perhaps with a scoop of vanilla ice cream, yet they're perfectly appropriate as a casual snack or lunchbox treat. The recipe doubles easily for larger gatherings, and the bars freeze beautifully for make-ahead convenience.

The visual appeal of these brownies shouldn't be overlooked either. The golden-brown surface of the bars provides the perfect canvas for the creamy glaze, which sets with a slight sheen that catches the light beautifully. When cut into neat squares, they display an appealing cross-section showing the moist, banana-flecked interior beneath the glazed top layer.

One particularly wonderful aspect of this recipe is its forgiving nature. Even bakers with limited experience can achieve impressive results, as the moisture from the bananas and yogurt helps prevent common issues like dryness or toughness. The batter comes together quickly with basic equipment, making it accessible for weeknight baking when time is limited.

The first time I made these for my family gathering, I worried they might be too simple compared to the elaborate desserts my sister usually brings. To my surprise, every last crumb disappeared before her chocolate truffle cake was even sliced! Now they're requested at every family function, and I always keep bananas ripening specifically for this recipe.

A stack of cake squares with white frosting. Pin it
A stack of cake squares with white frosting. | yummyflavorsrecipes.com

I've experimented with countless banana desserts over the years, but nothing compares to the joy these simple brownies bring to my kitchen. There's something magical about the transformation that occurs when those spotted bananas meet the brown butter glaze – a humble fruit becomes something truly extraordinary. While I appreciate the versatility of this recipe and often make variations with nuts or chocolate chips, I always return to the classic glazed version when I want to impress. The simplicity of ingredients belies the complexity of flavors, reminding me that sometimes the most memorable dishes are the ones that transform everyday ingredients into something truly special.

Frequently Asked Questions

→ How ripe should my bananas be for this recipe?
The riper the better! Look for bananas with plenty of brown spots or even mostly black peels. These overripe bananas are sweeter and have a stronger banana flavor that works perfectly in these brownies.
→ Can I make these brownies without the frosting?
Absolutely! While the brown butter frosting adds wonderful flavor, these banana bread brownies are delicious on their own. You could also dust them with powdered sugar for a simpler finish.
→ Why is my brown butter frosting grainy?
This usually happens when the powdered sugar isn't fully incorporated. Make sure to sift your powdered sugar before adding it to the browned butter, and whisk thoroughly. If it's still grainy, add a splash more milk and keep whisking.
→ How do I know when the brownies are done baking?
Insert a toothpick into the center - it should come out clean or with a few moist crumbs (but no wet batter). The edges will be slightly golden, and the top should spring back when lightly touched.
→ Can I substitute the Greek yogurt or sour cream?
Yes! You can use either Greek yogurt or sour cream interchangeably. In a pinch, you could also use regular yogurt (though the batter may be slightly thinner) or buttermilk as alternatives.

Frosted banana cake bars

A delicious cross between banana bread and dessert bars with a rich brown butter frosting - the perfect way to use up those ripe bananas on your counter.

Prep Time
10 Minutes
Cook Time
25 Minutes
Total Time
35 Minutes
By: Ranah


Difficulty: Intermediate

Cuisine: American

Yield: 16 Servings (16 bars)

Dietary: Vegetarian

Ingredients

→ For the Banana Bread Bars

01 1-1/2 cups granulated sugar
02 1 cup plain Greek yogurt (or sour cream)
03 1/2 cup butter, softened
04 2 large eggs
05 3-4 ripe bananas, mashed
06 2 teaspoons vanilla extract
07 2 cups all-purpose flour
08 1 teaspoon baking soda
09 3/4 teaspoon salt

→ For the Brown Butter Frosting

10 4 Tablespoons butter
11 2 cups powdered sugar
12 1 teaspoon vanilla extract
13 1-2 Tablespoons milk

Instructions

Step 01

Preheat oven to 375 degrees F and grease a 9x13 inch pan with non-stick cooking spray.

Step 02

In a large bowl, cream together the sugar and butter. Beat in the Greek yogurt (or sour cream), eggs, mashed bananas and vanilla extract.

Step 03

Add the flour, baking soda, and salt, mixing just until moistened. If using nuts, stir them in now.

Step 04

Spread batter evenly into prepared pan and bake for 23-28 minutes or until a toothpick inserted in the center comes out clean, or with few crumbs.

Step 05

While the bars bake, heat the butter in a large skillet over medium heat. Allow it to come to a simmer until it starts to turn a delicate brown and has a nutty aroma (watch carefully to avoid burning). Remove from heat immediately.

Step 06

Whisk in the powdered sugar, vanilla extract and 1 tablespoon of milk until smooth. Add more powdered sugar or milk if needed to achieve desired consistency.

Step 07

Pour the warm frosting over the warm banana bread bars. Spread gently with the back of a spoon and allow to cool before cutting into squares.

Notes

  1. Add chopped walnuts or pecans to the batter for a nutty crunch.
  2. Mini chocolate chips make a delicious addition to the batter.
  3. For a healthier version, reduce the sugar by half and use 3-4 tablespoons of butter for the frosting.
  4. These bars can be made 1-2 days ahead and stored in the refrigerator.

Tools You'll Need

  • 9x13 inch baking pan
  • Large mixing bowl
  • Electric mixer
  • Skillet for browning butter
  • Measuring cups and spoons

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Contains dairy (butter, milk, yogurt/sour cream)
  • Contains eggs
  • Contains wheat/gluten (flour)

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 254
  • Total Fat: 9 g
  • Total Carbohydrate: 39 g
  • Protein: 4 g