Irresistible Banana Bars with Cinnamon Cream Cheese Frosting: Your Go-To Recipe for Overripe Bananas
Do you often find yourself with a bunch of brown, spotty bananas sitting on your counter? Instead of tossing them or defaulting to the usual banana bread, why not transform them into something truly spectacular? These incredible banana bars are the answer! Tender, exceptionally moist, and bursting with rich banana flavor, they are crowned with a thick, dreamy layer of cinnamon cream cheese frosting that elevates them from a simple treat to an unforgettable dessert. This recipe is not just easy to make, it’s a delightful way to satisfy your sweet tooth and impress friends and family.

Why These Banana Bars Will Be Your New Favorite Dessert
While classic banana bread holds a special place in our hearts, these banana bars offer a fresh, exciting twist. Imagine a super soft banana cake, infused with a subtle hint of warming cinnamon, all topped with a generous, creamy blanket of tangy cream cheese frosting. It’s a dessert experience that truly stands out!
One of the brilliant aspects of this recipe is that the bars are baked in a standard 15×10 inch jelly roll pan. This means you get a large batch, perfect for potlucks, parties, or simply ensuring you have enough deliciousness for days. More importantly, baking them in a thinner layer ensures that each bite delivers the perfect ratio of moist banana cake to luscious frosting – a critical detail for any dessert lover!

Essential Ingredients for the Best Banana Bars
Creating truly outstanding banana bars starts with understanding the role of each ingredient. Here’s a closer look at what makes this recipe so special:
The Magic of Overripe Bananas
The secret to intensely flavorful and moist banana baked goods lies in using overripe bananas. Those with plenty of brown spots (but not entirely black) are ideal. As bananas ripen, their starch converts to sugar, making them sweeter and softer, which contributes to the incredible flavor and tender crumb of these bars. You’ll need approximately 3-4 medium-sized bananas to yield the 1 1/2 cups of mashed banana required for this recipe. Always remember to remove any actual bruises before mashing.
The Role of Sour Cream
The addition of sour cream might seem unusual, but it’s a game-changer for moisture and texture. Sour cream adds a delicate tang that complements the sweetness of the bananas and results in an unbelievably moist, tender crumb that practically melts in your mouth. If you don’t have sour cream on hand, full-fat plain Greek yogurt can be a suitable substitute, or you can even add an extra 1/2 cup of mashed banana for more fruit flavor.
A Touch of Spice: Cinnamon
Cinnamon is the perfect spice to pair with bananas. A hint of cinnamon in the banana bar batter beautifully enhances the banana flavor without overpowering it, adding a warm, inviting depth. We’ll also incorporate cinnamon into the cream cheese frosting for an extra layer of deliciousness that ties the whole dessert together.
Butter and Sugar Combination
This recipe utilizes both granulated sugar and brown sugar. While many recipes opt for only granulated sugar, the brown sugar is key here. Its molasses content adds a lovely caramel undertone and extra moisture, contributing to the bars’ rich, complex flavor and wonderfully soft texture. Ensure your unsalted butter is properly softened to room temperature for optimal creaming with the sugars, which helps create a light and airy batter.
Cream Cheese Frosting Perfection
For a truly exceptional cream cheese frosting, the type of cream cheese matters significantly. Always use full-fat, brick-style cream cheese. Low-fat, low-calorie, or spreadable cream cheese will result in a runny, thin frosting that won’t hold its shape or provide the desired creamy texture. Pairing it with softened (but slightly cooler than room temp) unsalted butter, sifted powdered sugar, vanilla, and a pinch of salt creates a balanced, rich, and perfectly spreadable frosting. The optional touch of cinnamon in the frosting is highly recommended to complement the banana bars.
Step-by-Step Guide to Baking Perfect Banana Bars
Baking these banana bars is a straightforward process, even for novice bakers. Follow these detailed steps to achieve a consistently delicious result every time:
1. Preparing Your Pan and Oven
Begin by preheating your oven to 350°F (180°C). This ensures the oven is at the correct temperature when the batter is ready, promoting even baking. Next, prepare your 15×10 inch (25×38 cm) jelly roll pan. Lightly spray it with a non-stick cooking spray, then dust it evenly with flour. This crucial step prevents sticking and ensures your beautiful banana bars release easily after baking.
2. Combining Dry Ingredients
In a medium-sized mixing bowl, whisk together the all-purpose flour, cinnamon, baking soda, and salt. This step is more important than you might think! Whisking thoroughly ensures there are no lumps of flour and that leavening agents like baking soda are evenly distributed throughout, leading to a consistent rise and texture in your baked bars. Set this mixture aside.
3. Creaming Wet Ingredients
In a separate, larger bowl, combine the softened unsalted butter, granulated sugar, and brown sugar. Using an electric mixer, beat these ingredients together until the mixture is light, fluffy, and creamy, typically for 2-3 minutes. This process incorporates air into the batter, contributing to the bars’ tender texture. Then, add the two large eggs one at a time, beating well after each addition until fully incorporated and no visible pieces or lumps of egg remain. Stir in the vanilla extract.

4. Incorporating Bananas and Sour Cream
Next, beat the mashed bananas and sour cream into the butter and sugar mixture. Mix until just combined. Don’t worry if there are a few small lumps of mashed banana remaining; these will add lovely pockets of banana flavor and texture to the finished bars. Remember to measure the mashed bananas *after* mashing them to ensure accuracy, and always cut off any bruised spots before mashing.

5. Bringing it All Together
Gradually add the whisked dry ingredients to the wet banana mixture. Start your mixer on a low speed or use a wire whisk to gently combine, adding about half of the dry ingredients at a time. Mix until just combined, being careful not to overmix. Overmixing can develop the gluten in the flour, leading to tough bars. A slightly lumpy batter due to the bananas is perfectly normal and expected, but there should be no visible streaks of dry flour.
6. Baking to Golden Perfection
Pour the prepared batter evenly into your floured jelly roll pan. Use an offset spatula or the back of a spoon to smooth the top into an even layer. Bake in the preheated oven for approximately 24-28 minutes. The bars are ready when the top is golden brown, a toothpick inserted into the center comes out clean or with a few moist crumbs attached, and the edges of the bars begin to pull away from the sides of the pan. Once baked, remove the pan from the oven and allow the banana bars to cool completely on a wire rack before frosting. This is crucial; frosting warm bars will result in a melted, messy frosting!

Crafting the Silky Cinnamon Cream Cheese Frosting
A thick, decadent cream cheese frosting is the crowning glory of these banana bars. Achieving the perfect consistency and flavor is easy with these tips:

Ingredients for the Frosting: You’ll need softened unsalted butter (slightly colder than room temperature), full-fat brick-style cream cheese, sifted powdered sugar, a touch of cinnamon, vanilla extract, and a pinch of salt. Whipping cream or heavy cream is optional, for adjusting consistency.
- Beat the Butter: In a large mixing bowl, beat the softened butter until it’s smooth and creamy, about 1-2 minutes.
- Add Cream Cheese: Cut your brick-style cream cheese into cubes and add it to the bowl with the butter. Beat until fully incorporated and smooth. The cream cheese should be softened but still slightly cool to prevent the frosting from becoming too runny.
- Introduce Dry Ingredients: Gradually add about 3 cups of sifted powdered sugar to the butter and cream cheese mixture. Also, add the cinnamon, vanilla extract, and salt. Start the mixer on a very low speed to avoid a cloud of powdered sugar, then gradually increase the speed and beat until well combined and smooth.
- Adjust Consistency and Sweetness: If you desire a thicker or sweeter frosting, continue to add the remaining powdered sugar (up to 4 cups total), about 1/2 cup at a time. If the frosting seems too thick, you can add 1-2 tablespoons of whipping cream (or milk) until the desired spreadable consistency is reached. Beat until the frosting is light and fluffy.
- Frost the Cooled Bars: Ensure your banana bars are completely cool before frosting. If the bars are even slightly warm, the frosting will melt and create a mess. Use an offset spatula to spread the frosting evenly over the cooled bars. If you notice cake crumbs getting into your frosting, you can chill the unfrosted bars in the fridge for 20-30 minutes first, which helps firm up the surface.
Recipe Tip: The Chilling Secret for Clean Slices
After frosting your banana bars, place them in the refrigerator for at least 30 minutes before slicing. This allows the cream cheese frosting to firm up slightly, or “crust,” which results in beautifully clean and neat slices. A thin, sharp knife works best for cutting.
Tips for Slicing and Storing Your Banana Bars
Once your banana bars are frosted and chilled, they are ready to be enjoyed! Here are some final tips to make sure they’re perfect:
The Chilling Secret for Clean Slices
As mentioned, chilling the frosted bars for at least 30 minutes (or longer) in the refrigerator is key to getting neat, professional-looking slices. Use a sharp, thin knife, wiping it clean between cuts for the absolute best results. This small step makes a huge difference in presentation.
Proper Storage for Freshness
Due to the cream cheese frosting, these banana bars must be stored in the refrigerator. Place them in an airtight container or cover the pan tightly with plastic wrap. They will remain wonderfully moist and delicious for up to 4 days.
Freezing for Later Enjoyment
These banana bars freeze beautifully! For best results, allow the frosting to firm up completely in the refrigerator. You can then slice the bars, wrap individual portions tightly in plastic wrap, and then place them in an airtight freezer-safe container or bag. They can be frozen for up to 2-3 months. Thaw individual bars in the refrigerator or at room temperature for a quick, delightful treat whenever a craving strikes.
You’ll fall in love with these banana bars. Their tender texture, perfect banana bread flavor, and the luxurious, spiced cream cheese frosting create a dessert that’s both comforting and elegant. They are surprisingly simple to make, yet yield a truly impressive result. Enjoy the process of baking them, and savor every single delicious bite!

Recipe: Banana Bars with Cinnamon Cream Cheese Frosting
Banana Bars with Cream Cheese Frosting
Fiona Dowling
30 mins
25 mins
55 mins
20 large bars
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Equipment
- 10×15 inch (25×38 cm) jelly roll pan
- Mixing bowls (medium and large)
- Electric mixer
- Whisk
- Offset spatula (for frosting)
Ingredients
Banana Bars
- 2 cups all-purpose flour (250 grams)
- 1/2 teaspoon cinnamon
- 1 teaspoon baking soda
- 1/2 teaspoon salt
- 1/2 cup unsalted butter (112 grams), softened
- 1 cup granulated sugar (200 grams)
- 1/2 cup brown sugar (105 grams), light or dark
- 2 large eggs
- 2 teaspoons vanilla extract
- 1/2 cup sour cream (120 ml), from a tub
- 1 1/2 cup mashed bananas (from about 3-4 brown bananas, cut out any bruises before mashing)
Cream Cheese Frosting
- 1/2 cup unsalted butter (112 grams), softened but still a little colder than room temperature
- 8 ounce cream cheese (226 grams), brick style, full fat
- 3-4 cups powdered sugar (330-440 grams), sifted
- 1/2 teaspoon cinnamon, optional
- 1 teaspoon vanilla extract
- 1/4 teaspoon salt
- 1-2 tablespoons whipping cream, or heavy cream, if needed
Instructions
Banana Bars
- Preheat the oven to 350F (180C). Lightly grease a 10″x15″x1″ jelly roll pan, then dust with flour. Set aside.
- In a medium bowl, whisk together the flour, cinnamon, baking soda and salt. Set aside.
- In a separate large bowl, beat together the butter, granulated sugar and brown sugar until creamed.
- Mix the eggs and vanilla into the butter mixture until you no longer see pieces or lumps of egg.
- Mix the sour cream and mashed bananas into the butter mixture. Note: Be sure to cut any bruises out of the bananas before mashing. Mash the bananas well, then measure. If there are lumps in your batter from the bananas – that’s OK.
- Add the dry ingredients to the bowl and mix them into the batter, starting with the mixer on a low speed or using a wire whisk. I typically do this about 1/2 at a time. When you’re finished, there shouldn’t be lumps of flour but a lumpy mixture due to the bananas is OK and expected.
- Pour the batter into the prepared pan and smooth into an even layer.
- Bake in the preheated oven for about 24-28 minutes, or until the top is golden, an inserted toothpick comes out clean or with a few moist crumbs, and the bars are starting to pull away from the edges of the pan.
Cream Cheese Frosting
- Add the butter to a large bowl and beat until smooth.
- Cut the cream cheese into cubes and add to the bowl. Mix until incorporated.
- Add in 3 cups sifted powdered sugar, along with the cinnamon, vanilla and salt. Start with the mixer on a low speed and gradually mix until combined.
- Beat in the rest of the powdered sugar about 1/2 cup at a time, alternating with 1 tablespoon of cream as needed, until the desired sweetness and thickness is reached.
- Ensure the bars are fully cooled, then frost with an offset spatula. If you see the cake crumbs coming into the frosting, place the unfrosted bars in the fridge for 20-30 minutes before frosting.
- Slice the bars with a thin knife. I recommend placing the frosted bars in the fridge for about 30 minutes before slicing.
Notes
- Flour: Whisk first, then spoon into dry measuring cups and level off the top. Weigh using a scale for the most accurate results.
- Room Temperature Ingredients: For the bars, take the butter, eggs and sour cream out of the fridge about 30 minutes before getting started.
- Sour Cream: Use full-fat sour cream for the best results. Plain Greek yogurt works too or an additional 1/2 cup mashed banana.
- Bananas: You will need 3 larger bananas or 4 small bananas. They should be spotty, but not entirely brown. Be sure to cut out any bruises.
- Cream Cheese: Use full-fat, brick-style cream cheese. Do not use low fat, low calorie or spreadable.
- Nutrition: Information provided is an estimate only and based on 1 bar with frosting, assuming all the frosting is used and the pan is sliced into 20 uniform pieces.
- Storage: Store covered or in an airtight container in the fridge for up to 4 days. These bars can also be frozen for up to 2-3 months.
Nutrition
Carbohydrates: 48g,
Protein: 3g,
Fat: 14g,
Saturated Fat: 8g,
Polyunsaturated Fat: 1g,
Monounsaturated Fat: 4g,
Trans Fat: 0.4g,
Cholesterol: 55mg,
Sodium: 189mg,
Potassium: 108mg,
Fiber: 1g,
Sugar: 36g,
Vitamin A: 485IU,
Vitamin C: 1mg,
Calcium: 26mg,
Iron: 1mg
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Discover More Delicious Banana Desserts
If you love the flavor of bananas as much as we do, be sure to explore these other fantastic recipes:
- The Best Banana Cake
- Banana Cupcakes with Cinnamon Cream Cheese Frosting
- Banana Chocolate Chip Cake – a stunning layer cake featuring rich chocolate frosting