Frosted Banana Bars
These Frosted Banana Bars are soft, moist, and packed with sweet banana flavor, then finished with a smooth layer of creamy cream cheese frosting. Made with simple ingredients like ripe bananas, sour cream, butter, and vanilla, these easy banana bars are a delicious way to use up bananas sitting on the counter.
Unlike traditional banana bread, these bars are baked in a large jellyroll pan, giving them a soft, tender texture and making them perfect for slicing into bite-sized squares. The tangy cream cheese frosting adds just the right amount of richness to the naturally sweet banana base.
They’re perfect for family gatherings, potlucks, bake sales, afternoon snacks, and easy homemade desserts. If you love banana bread and cream cheese frosting, these frosted banana bars are a must-try!
Why Everyone Loves Frosted Banana Bars
- Soft and moist: Sour cream and ripe bananas help create an incredibly tender texture.
- Easy to make: The batter comes together with simple pantry ingredients and straightforward steps.
- Perfectly sweet: Ripe bananas provide natural sweetness without overpowering the dessert.
- Creamy frosting: Smooth cream cheese frosting adds a delicious tangy contrast to the banana bars.
- Great for sharing: A 10×15-inch pan produces plenty of bars for parties, potlucks, and family gatherings.
- A great way to use ripe bananas: This recipe gives overripe bananas a delicious second life.
Ingredients Overview
- Butter – Adds richness and helps create a soft, tender texture.
- Granulated sugar – Sweetens the bars and helps create a light texture.
- Eggs – Bind the ingredients together and provide structure.
- Sour cream – Adds moisture and a subtle tang while keeping the banana bars soft.
- Vanilla extract – Enhances the banana flavor and adds warmth.
- All-purpose flour – Provides the structure needed for the bars.
- Baking soda – Helps the batter rise and keeps the finished bars light.
- Salt – Balances the sweetness and enhances the other flavors.
- Ripe bananas – Provide natural sweetness, moisture, and the signature banana flavor.
- Cream cheese frosting – Creates a smooth, creamy topping that pairs beautifully with banana.
Variations
- Banana Nut Bars – Stir chopped walnuts or pecans into the batter for extra crunch.
- Chocolate Chip Banana Bars – Add semisweet or milk chocolate chips for a chocolatey twist.
- Cinnamon Banana Bars – Add a teaspoon of ground cinnamon to the batter for warm, cozy flavor.
- Chocolate Frosted Banana Bars – Replace the cream cheese frosting with chocolate frosting for a richer dessert.
- Peanut Butter Banana Bars – Swirl a little creamy peanut butter into the batter before baking.
- Extra-Banana Flavor – Add a little banana extract along with the vanilla for an even stronger banana taste.
How to Make Frosted Banana Bars
1. Preheat the Oven
Preheat your oven to 350°F (175°C).
Grease a 10×15-inch jellyroll pan thoroughly so the banana bars release easily after baking.
For even easier removal, you can also line the pan with parchment paper, leaving a little overhang on the sides.
2. Cream the Butter and Sugar
In a large mixing bowl, beat the softened butter and granulated sugar together until smooth and creamy.
Creaming the butter and sugar well helps create a lighter texture in the finished banana bars.
3. Add the Eggs and Wet Ingredients
Beat in the eggs one at a time, mixing well after each addition.
Then stir in the sour cream and vanilla extract until the mixture is smooth and evenly combined.
4. Combine the Dry Ingredients
In a separate bowl, whisk together the all-purpose flour, baking soda, and salt.
Mixing the dry ingredients separately helps distribute the baking soda and salt evenly throughout the batter.
5. Make the Banana Batter
Gradually add the dry ingredients to the wet mixture.
Stir just until combined. Avoid overmixing because too much mixing can make the bars dense.
Finally, fold in the mashed ripe bananas until evenly distributed throughout the batter.
6. Spread the Batter
Pour the banana batter into the prepared jellyroll pan.
Use a spatula to spread the batter into an even layer, making sure it reaches the corners.
7. Bake the Banana Bars
Place the pan in the preheated oven and bake for approximately 20–25 minutes.
The bars are ready when the center is set and a toothpick inserted into the middle comes out clean or with a few moist crumbs.
Avoid overbaking because this can make the banana bars dry.
8. Cool Completely
Remove the pan from the oven and allow the banana bars to cool completely in the pan.
This step is important because applying cream cheese frosting to warm bars can cause the frosting to soften or melt.
9. Frost and Serve
Once completely cooled, spread the cream cheese frosting evenly over the top.
Use a spatula to create a smooth layer or add decorative swirls if desired.
Cut into squares and serve.
Pro Tips and Cooking Secrets
Use very ripe bananas. Bananas with plenty of brown spots have more sweetness and stronger banana flavor, making them ideal for this recipe.
Don’t overmix the batter. Once the flour is incorporated, mix only until combined. This helps keep the bars soft and tender.
Cool completely before frosting. Cream cheese frosting can become soft and slide off if it is spread over warm banana bars.
Don’t overbake. Start checking the bars around the 20-minute mark. A clean toothpick is a better indicator of doneness than simply relying on the color of the top.
Serving Suggestions
- Serve chilled or at room temperature with a cup of coffee or tea.
- Add chopped walnuts or pecans over the frosting for extra crunch.
- Cut them into small squares and serve as an easy party or potluck dessert.
- Add a light sprinkle of cinnamon over the cream cheese frosting before serving.
How to Store Frosted Banana Bars
Because these banana bars are topped with cream cheese frosting, store leftovers in an airtight container in the refrigerator.
They will keep well for approximately 3–4 days when properly refrigerated.
For the best texture, allow the bars to sit at room temperature for a few minutes before serving.
Can You Freeze Frosted Banana Bars?
Yes, banana bars can be frozen.
For the best results, freeze the unfrosted banana bars, wrapped tightly in plastic wrap and placed inside a freezer-safe container or bag.
Thaw them in the refrigerator, then add the cream cheese frosting before serving.
If freezing already-frosted bars, freeze them uncovered until the frosting is firm, then wrap and store in an airtight freezer-safe container.
Make-Ahead Tips
These banana bars are excellent for making ahead.
Bake the bars a day in advance and keep them covered in the refrigerator. Frost them before serving or the day you plan to serve them.
For parties and gatherings, you can cut the chilled bars into squares ahead of time and arrange them on a serving platter.
Frosted Banana Bars FAQs
Can I use frozen bananas?
Yes. Thaw frozen bananas completely and drain off any excess liquid before mashing and adding them to the batter.
How ripe should the bananas be?
The best bananas are very ripe with plenty of brown spots. They are naturally sweeter and provide a stronger banana flavor.
Can I make these banana bars without sour cream?
You can substitute plain Greek yogurt for sour cream. The texture and flavor may be slightly different, but the bars should still remain moist and tender.
Can I add nuts to banana bars?
Absolutely. Chopped walnuts and pecans are especially delicious with banana and cream cheese frosting. Add approximately ½–1 cup to the batter.
Can I use homemade cream cheese frosting?
Yes. Homemade cream cheese frosting works perfectly. You can adjust the sweetness and vanilla to your preference.
How do I know when banana bars are done?
Insert a toothpick into the center of the bars. It should come out clean or with a few moist crumbs attached. Try not to overbake them because they can dry out quickly.
Frosted Banana Bars
Equipment
- 10×15-inch jellyroll pan
- large mixing bowl
- mixing spoon
- measuring cups and spoons
- Toothpick
Ingredients
- ½ cup butter, softened
- 1 ½ cups white sugar
- 2 eggs
- 1 cup sour cream
- 1 teaspoon vanilla extract
- 2 cups all-purpose flour
- 1 teaspoon baking soda
- ¼ teaspoon salt
- 1 cup mashed ripe bananas
- 1 16 ounce container cream cheese frosting
Instructions
- Preheat oven to 350 degrees F (175 degrees C). Grease a 10×15 inch jellyroll pan.
- In a large bowl, cream together the butter and sugar until smooth. Beat in the eggs, one at a time, then stir in the sour cream and vanilla. Combine the flour, baking soda and salt; stir into the batter. Finally, mix in the mashed banana. Spread evenly into the prepared pan.
- Bake for 20 to 25 minutes in the preheated oven, until a toothpick inserted into the center comes out clean. Allow bars to cool completely before frosting with the cream cheese frosting.
