Banana Bread Bars with Fluffy Butter Icing

These Banana Bread Bars with Fluffy Butter Icing are the perfect sweet treat for any occasion! Made in one bowl with fresh bananas, and topped with the softest butter frosting!

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  If there’s one thing I love to bake with, it’s bananas. I’ve shared so many of my favourite banana recipes with you already, like these Best Ever Banana Muffins or these Banana Layer Cake with Peanut Butter Frosting, and these Banana Bread Bars with Fluffy Butter Icing are another one of my favourite ways to use up over-ripe bananas, and you’re going to LOVE them!

These Banana Bread Bars with Fluffy Butter Icing are SO easy to make in just one bowl with super basic ingredients, and they’re beautifully dense and moist. And the fluffy butter icing is SO smooth and creamy, you’ll never believe the secret ingredient that  takes this frosting to the next level!!

Like the look of this recipe? You’ll love this Chocolate Layer Cake or this Classic Carrot Cake!

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I hope you enjoyed this recipe! Let me know in the comments below, what’s your favourite way to use up ripe bananas? I’d love to know!  

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Looking for more recipes like this? You’ll LOVE these:

• Rhubarb Streusel Cake

• Best Ever Blueberry Ricotta Coffee Cake

• Apple Crumble Muffins

• Apple Carrot Ginger Muffins

• Best Ever Banana Muffins

• Strawberry Rhubarb Skillet Cobbler

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Banana Bread Bars with Fluffy Butter Icing

These Banana Bread Bars with Fluffy Butter Icing are the perfect sweet treat for any occasion! Made in one bowl with fresh bananas, and topped with the softest butter frosting!

5 from 12 votes

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By Chrissie (thebusybaker.ca)

Yield 24 servings

Prep 20 minutes mins

Cook 25 minutes mins

Total 45 minutes mins

Recipe: Ingredients 

0.5x1x2x

• ▢ 4 medium ripe bananas
• ▢ 1 1/4 cups white sugar
• ▢ 1 cup fat free plain Greek yogurt
• ▢ 2 eggs
• ▢ 1/2 cup vegetable oil
• ▢ 1 teaspoon vanilla extract
• ▢ 2 cups all purpose flour
• ▢ 1 teaspoon baking soda
• ▢ 1/2 teaspoons salt
• ▢ 1 tablespoon butter (for greasing the pan)

For the frosting:

• ▢ 1 cup unsalted butter at room temperature
• ▢ 1 1/2 cups icing sugar
• ▢ 2 tablespoons whole milk
• ▢ 2 tablespoons boiling water
• ▢ a few drops of vanilla extract optional
• ▢ cinnamon for dusting, optional

US CustomaryMetric

Recipe: Instructions 

• Preheat your oven to 375 degrees Fahrenheit. 
• Prepare a large rimmed baking sheet or jelly roll pan by greasing it with some butter and lining it with parchment paper. It also helps to grease on top of the parchment paper so the bars release easily.
• Mash the bananas in a large bowl. It's easy enough to use a fork for this job, but you can also use a potato masher if you'd rather do that. 
• Add the sugar, Greek yogurt, eggs, oil and vanilla to the bowl with the bananas and mix these ingredients together with a wooden spoon until they're well combined.
  
• In a separate bowl, combine the flour, baking soda and salt with a wire whisk. Dump the dry ingredients into the wet ingredients and mix just until everything is combined and you can't see any streaks of flour.
  
• Pour the batter into the prepared pan and add it to the oven. Let it bake at 375 degrees Fahrenheit for about 22-25 minutes, or until the top is a nice golden brown and it passes the toothpick test (insert a toothpick into the centre and if it comes out clean, it's done!).
  
• Let the banana bread cool in the pan until it is cool completely. It helps to place the pan on a wire rack while it's cooling. 
  
• While you're waiting for the banana bread to cool, you can make the frosting. Add the butter to the bowl of your stand mixer fitted with the paddle attachment. Whip the butter on high speed for about 2 minutes, scraping down the sides of the bowl every 30 seconds or so to make sure the butter is whipped evenly.
  
• While the butter is whipping, it's a good idea to boil some water in your kettle. You don't need much, only 2 tbsp, but you must add it right after it boils so it's a good idea to get it started now.
  
• Add the icing sugar and the milk at the same time and combine these ingredients with the butter, first on low speed and then on high speed until everything is combined well and the mixture is completely smooth (about 3 minutes). Be sure to scrape down the sides of the bowl every 30 seconds or so to make sure all the ingredients are incorporated.
  
• Once the kettle has boiled, add the boiling water very slowly as the mixer is on low speed. Once all the water has been added, turn the mixer to high speed and let the frosting whip for about 3 more minutes or until the frosting becomes more pale in colour and achieves an extremely smooth consistency.
  
• Spread the frosting over the banana bread using an offset spatula. Dust with cinnamon (optional), cut into squares and serve!
  

Recipe: Notes

These banana bread bars keep in an airtight container for up to 3 days, but they are best enjoyed the day they're made.

Course: Baking, Dessert

Cuisine: American, Baking, Canadian

Keywords: Banana Bread Bars, Fluffy Butter Frosting, Fluffy Butter Icing

Recipe: Nutrition

Nutrition Facts

Banana Bread Bars with Fluffy Butter Icing

Amount Per Serving (1 serving)

Calories 248 Calories from Fat 117

% Daily Value*

Fat 13g20%

Saturated Fat 9g56%

Cholesterol 36mg12%

Sodium 109mg5%

Potassium 104mg3%

Carbohydrates 31g10%

Fiber 1g4%

Sugar 21g23%

Protein 3g6%

Vitamin A 283IU6%

Vitamin C 2mg2%

Calcium 19mg2%

Iron 1mg6%

* Percent Daily Values are based on a 2000 calorie diet.

Notice: Nutrition is auto-calculated, using Spoonacular, for your convenience. Where relevant, we recommend using your own nutrition calculations.

This recipe is adapted from The Girl Who Ate Everything, but the frosting recipe is an old one of my grandmother’s.