There’s something undeniably comforting about banana bread. The warm, sweet aroma wafting through the kitchen can instantly lift your spirits, and the first bite? Pure bliss. But have you ever tried transforming that classic loaf into Banana Bread Bars? These bars maintain all that delightful flavor but come with a soft, chewy texture that’s perfect for snacking or dessert. Plus, they’re incredibly easy to make! Let’s dive into the wonderful world of Banana Bread Bars.
Why It Works Every Time

Banana Bread Bars are a perfect blend of moistness and flavor. The combination of ripe bananas and sour cream creates a tender crumb, while the addition of butter brings richness. The baking soda provides just the right amount of lift, ensuring your bars are fluffy yet substantial. The beauty of these bars lies in their simplicity—just mix, pour, and bake!
Ingredient Rundown
- 1 cup sugar: Sweetens the bars and helps achieve that lovely golden crust.
- 1 cup sour cream: Adds moisture and a slight tang that balances the sweetness of the bananas.
- 1 cup butter, softened: Provides richness and helps keep the bars moist.
- 2 eggs: Binds the ingredients together and adds structure.
- 3-4 ripe bananas, mashed (about 2 cups): The star of the show, bringing natural sweetness and flavor.
- 2 teaspoons vanilla extract: Enhances the overall flavor profile.
- 2 cups all-purpose flour: The base of your bars, giving them body and texture.
- 1 teaspoon baking soda: Helps the bars rise and become fluffy.
- 1/2 teaspoon salt: Balances the sweetness and enhances flavors.
- 1 cup chopped walnuts, optional: Adds a delightful crunch and nuttiness.
- 4 cups powdered sugar: For the creamy, sweet frosting that finishes off your bars perfectly.
- 1 teaspoon vanilla extract: For the frosting, adding extra flavor.
- 3 tablespoons milk: Helps achieve the right consistency for the frosting.
Equipment at a Glance
- Mixing bowls: For combining your wet and dry ingredients.
- Whisk: Essential for mixing your batter smoothly.
- Spatula: Useful for folding in ingredients and spreading frosting.
- 9×13 inch baking pan: The perfect size for creating thick, chewy bars.
- Oven: Preheat to ensure even baking.
- Cooling rack: To cool the bars before frosting.
Banana Bread Bars, Made Easy

Step 1: Preheat the Oven
Start by preheating your oven to 350°F (175°C). This ensures your bars bake evenly.
Step 2: Prepare the Baking Pan
Grease a 9×13 inch baking pan with butter or non-stick spray to prevent sticking. You can also line the bottom with parchment paper for easy removal.
Step 3: Mix the Wet Ingredients
In a large mixing bowl, cream together 1 cup of softened butter and 1 cup of sugar until light and fluffy. Then, add in the 2 eggs, 2 teaspoons of vanilla extract, and 3-4 ripe bananas (mashed). Mix until well combined.
Step 4: Add the Sour Cream
Stir in 1 cup of sour cream. This is what keeps your bars moist and adds that lovely tang.
Step 5: Combine Dry Ingredients
In a separate bowl, mix together 2 cups of all-purpose flour, 1 teaspoon of baking soda, and 1/2 teaspoon of salt. Gradually add the dry mixture to the wet ingredients, stirring gently until just combined. If you’re using walnuts, fold in 1 cup of chopped walnuts.
Step 6: Bake the Bars
Pour the batter into the prepared baking pan and spread it evenly. Bake in your preheated oven for 25-30 minutes, or until a toothpick inserted in the center comes out clean. The edges should be golden brown.
Step 7: Cool and Frost
Once baked, remove the pan from the oven and let it cool on a wire rack. After the bars have cooled completely, prepare your frosting by mixing 4 cups of powdered sugar, 1 teaspoon of vanilla extract, and 3 tablespoons of milk until smooth. Spread the frosting generously over the cooled bars.
Smart Substitutions

- Butter: Use coconut oil or a dairy-free butter alternative for a non-dairy version.
- Sour Cream: Greek yogurt can be used as a healthier alternative.
- Walnuts: Substitute with pecans or leave them out for a nut-free version.
- Granulated Sugar: Coconut sugar or a sugar substitute can be used for a lower glycemic option.
Cook’s Commentary
Banana Bread Bars are a versatile treat. They can be served as a breakfast option, a snack, or even a dessert. The flavors improve over time, making them perfect for meal prep. You can easily adjust the sweetness according to your preference by using less sugar or opting for ripe bananas that are naturally sweeter. Plus, these bars freeze beautifully—just wrap them tightly in plastic wrap and store them in an airtight container. They’ll last for up to three months in the freezer. When you’re ready to enjoy, simply thaw at room temperature or pop them in the microwave for a few seconds to warm them up!
Save It for Later
These Banana Bread Bars are not just a one-time treat; they are perfect for making ahead. You can easily bake a batch on the weekend and enjoy them throughout the week. Store the bars in an airtight container at room temperature for up to 5 days, or refrigerate for a longer shelf life. The frosting can be made in advance as well—just keep it in the fridge until you’re ready to use it.
Banana Bread Bars Q&A
Can I use frozen bananas for this recipe?
Absolutely! Just make sure to thaw the bananas and drain any excess liquid before mashing them for the recipe.
What if I don’t have sour cream?
You can substitute sour cream with Greek yogurt or buttermilk for a similar texture and flavor.
Can I make these bars gluten-free?
Yes! Simply substitute all-purpose flour with a gluten-free flour blend that measures cup-for-cup.
How do I know when my bars are done baking?
Your bars are done when a toothpick inserted into the center comes out clean or with a few moist crumbs. If it comes out with wet batter, give them a few more minutes in the oven.
Next Steps
Now that you have the recipe for Banana Bread Bars, it’s time to gather your ingredients and start baking! Whether you’re treating yourself, sharing with friends, or just looking for a delicious way to use up those ripe bananas, these bars are sure to impress. Enjoy the process, and happy baking!

Banana Bread Bars
Equipment
- Mixing Bowls
- Whisk
- Spatula
- 9x13 inch baking pan
- Oven
- Cooling rack
Ingredients
- 1 cup sugar
- 1 cup sour cream
- 1 cup butter softened
- 2 eggs
- 3-4 ripe bananas mashed (about 2 cups)
- 2 teaspoons vanilla extract
- 2 cups all-purpose flour
- 1 teaspoon baking soda
- 0.5 teaspoon salt
- 1 cup chopped walnuts optional
- 4 cups powdered sugar for frosting
- 1 teaspoon vanilla extract for frosting
- 3 tablespoons milk for frosting
Instructions
- Preheat your oven to 350°F (175°C) to ensure even baking.
- Grease a 9x13 inch baking pan with butter or non-stick spray, or line the bottom with parchment paper for easy removal.
- In a large mixing bowl, cream together 1 cup softened butter and 1 cup sugar until light and fluffy.
- Add 2 eggs, 2 teaspoons vanilla extract, and 3-4 mashed ripe bananas; mix until well combined.
- Stir in 1 cup sour cream to keep the bars moist and add tanginess.
- In a separate bowl, mix 2 cups all-purpose flour, 1 teaspoon baking soda, and 1/2 teaspoon salt.
- Gradually add the dry ingredients to the wet mixture, stirring gently until just combined. Fold in 1 cup chopped walnuts if using.
- Pour the batter into the prepared pan and spread evenly.
- Bake for 25-30 minutes until a toothpick inserted in the center comes out clean and edges are golden brown.
- Remove from oven and cool on a wire rack completely before frosting.
- Prepare frosting by mixing 4 cups powdered sugar, 1 teaspoon vanilla extract, and 3 tablespoons milk until smooth.
- Spread frosting generously over cooled bars.
Notes
- You can substitute sour cream with Greek yogurt or buttermilk for a similar texture and tang.
- Use coconut oil or dairy-free butter alternative for a non-dairy version.
- These bars freeze well; store tightly wrapped in an airtight container for up to 3 months.
- For a nut-free version, omit walnuts or substitute with pecans.
- Use frozen bananas thawed and drained to reduce waste and maintain flavor.
