🍌 Incredible Banana Bread Sheet Cake – Moist, Fluffy & Topped with Cream Cheese Frosting!
If you love homemade banana bread, just wait until you try this Incredible Banana Bread Sheet Cake! It’s everything you love about classic banana bread transformed into a soft, fluffy, buttery sheet cake with an incredibly moist texture and delicious banana flavor.
Made with ripe bananas, warm cinnamon, vanilla, and simple pantry ingredients, this cake bakes in a single pan and is topped with a rich, creamy homemade cream cheese frosting that makes every bite absolutely irresistible.
It’s easier than making individual banana bread loaves, perfect for feeding a crowd, and wonderful for family gatherings, potlucks, birthdays, or an afternoon sweet treat!
Recipe Details
- Prep Time: 15 minutes
- Cook Time: 30–35 minutes
- Cooling Time: 45 minutes
- Total Time: Approximately 1 hour 35 minutes
- Servings: 15–18 squares
- Difficulty: Easy
- Category: Dessert, Sheet Cake, Banana Baking
- Method: Baking
Ingredients
For the Banana Bread Sheet Cake
- 3 large ripe bananas, mashed (approximately 1½ cups)
- 2 cups (250 g) all-purpose flour
- 1 cup (200 g) granulated sugar
- ½ cup (100 g) packed light brown sugar
- ½ cup (113 g) unsalted butter, melted and slightly cooled
- 2 large eggs, room temperature
- ½ cup (120 g) sour cream or plain Greek yogurt
- 1 teaspoon vanilla extract
- 1 teaspoon baking soda
- ½ teaspoon baking powder
- ½ teaspoon salt
- 1 teaspoon ground cinnamon
For the Cream Cheese Frosting
- 8 ounces (226 g) cream cheese, softened
- ½ cup (113 g) unsalted butter, softened
- 3 cups (360 g) powdered sugar
- 1 teaspoon vanilla extract
- 1–2 tablespoons milk, as needed
Optional Decorations
- Chopped pecans or walnuts
- Banana slices
- A sprinkle of ground cinnamon
- Toasted coconut flakes
- Caramel drizzle
Note: Since only the recipe title was provided, the ingredient quantities above are suggested additions for a complete, moist banana bread sheet cake with classic cream cheese frosting.
Instructions
1. Prepare the Baking Pan
Preheat your oven to 350°F (175°C).
Lightly grease a 9 × 13-inch baking pan with butter or nonstick cooking spray.
Line the bottom with parchment paper if desired, leaving a little overhang on the sides for easier removal.
Set aside.
2. Prepare the Bananas
Peel the ripe bananas and place them in a medium mixing bowl.
Mash thoroughly with a fork until mostly smooth, leaving a few small pieces for extra banana texture if desired.
For the best flavor, use bananas with plenty of brown spots on their peels. Very ripe bananas are naturally sweeter and give the cake a stronger banana flavor.
Measure approximately 1½ cups of mashed banana.
3. Combine the Wet Ingredients
In a large mixing bowl, whisk together the melted butter, granulated sugar, and brown sugar until well combined.
Add the eggs one at a time, whisking after each addition.
Stir in the mashed bananas, sour cream, and vanilla extract.
Mix until everything is smooth and evenly incorporated.
Make sure the melted butter has cooled slightly before adding the eggs.
4. Combine the Dry Ingredients
In a separate bowl, whisk together the all-purpose flour, baking soda, baking powder, salt, and ground cinnamon.
Mix thoroughly so the leavening agents and cinnamon are evenly distributed throughout the flour.
5. Make the Banana Cake Batter
Gradually add the dry ingredients to the wet banana mixture.
Using a spatula, gently fold everything together until just combined.
The batter should be thick, moist, and smooth.
Avoid overmixing, as this can develop too much gluten and make the cake dense or tough.
6. Pour into the Baking Pan
Pour the banana cake batter into the prepared 9 × 13-inch baking pan.
Spread it evenly into the corners using a spatula.
Gently tap the pan against the counter once or twice to release any large air bubbles.
7. Bake Until Golden
Place the pan in the preheated oven.
Bake for approximately 30–35 minutes, or until the top is golden and a toothpick inserted into the center comes out clean or with a few moist crumbs.
If the edges begin browning too quickly, loosely cover the pan with aluminum foil during the final few minutes.
Avoid overbaking because this cake gets its deliciously moist texture from the ripe bananas and sour cream.
8. Cool the Cake Completely
Remove the cake from the oven and place the pan on a wire cooling rack.
Allow it to cool completely, approximately 45 minutes.
Do not spread cream cheese frosting over a warm cake because the frosting may melt and become runny.
9. Prepare the Cream Cheese Frosting
In a large mixing bowl, beat the softened cream cheese and butter with an electric mixer until smooth and creamy.
Add the vanilla extract.
Gradually add the powdered sugar, one cup at a time, mixing on low speed until incorporated.
Increase the mixer speed to medium and beat until the frosting becomes fluffy and smooth.
If the frosting is too thick, add 1 tablespoon of milk at a time until it reaches your preferred spreading consistency.
10. Frost the Banana Sheet Cake
Once the cake is completely cool, spread the cream cheese frosting evenly over the entire surface.
Use an offset spatula to create smooth swirls or decorative patterns.
For an extra-pretty finish, sprinkle chopped pecans, walnuts, or a little cinnamon over the frosting.
11. Slice and Serve!
Cut the cake into 15–18 squares using a sharp knife.
Wipe the blade between cuts for neat, beautiful portions.
Serve at room temperature or slightly chilled and enjoy every soft, banana-filled bite!
Expert Tips for the Best Banana Bread Sheet Cake
- Use very ripe bananas: Brown-spotted bananas provide the sweetest flavor and the best moisture.
- Measure the mashed bananas: Too much banana can make the cake overly dense or gummy.
- Use room-temperature eggs: They blend more easily with the other ingredients and help create an even batter.
- Don’t skip the sour cream: It adds moisture and creates a beautifully tender crumb.
- Avoid overmixing: Fold the flour into the wet ingredients just until combined.
- Measure flour correctly: Spoon it into the measuring cup and level it off rather than packing it down.
- Don’t overbake: Begin checking around 30 minutes because oven temperatures can vary.
- Cool before frosting: Allow the cake to cool completely so the cream cheese frosting stays thick and fluffy.
- Use softened cream cheese: This prevents lumps and creates a smooth frosting.
- Toast the nuts: A few minutes in a dry skillet brings out their natural flavor and makes a delicious topping.
Delicious Variations
Chocolate Chip Banana Sheet Cake: Fold ½–1 cup semi-sweet chocolate chips into the batter before baking for a delicious chocolate-banana combination.
Banana Pecan Cake: Add ½ cup chopped pecans or walnuts to the batter for extra crunch and nutty flavor.
Brown Butter Banana Cake: Brown the butter in a saucepan before adding it to the batter for a delicious nutty, caramel-like flavor.
Caramel Banana Sheet Cake: Drizzle caramel sauce over the cream cheese frosting just before serving.
Cinnamon Swirl Banana Cake: Mix ¼ cup brown sugar with 1 teaspoon cinnamon, sprinkle it over the batter, and gently swirl with a knife before baking.
Chocolate Frosted Banana Cake: Replace the cream cheese frosting with rich chocolate buttercream for a delicious bakery-style dessert.
Maple Pecan Banana Cake: Add ½ teaspoon maple extract to the frosting and sprinkle toasted pecans over the top.
Coconut Banana Cake: Fold ½ cup shredded coconut into the batter and sprinkle toasted coconut over the frosting.
What to Serve with Banana Bread Sheet Cake
This delicious cake pairs beautifully with:
- Freshly brewed coffee
- Cappuccino or vanilla latte
- Hot chocolate
- Chai tea
- Cold milk
- Vanilla ice cream
- Fresh strawberries and blueberries
- Caramel sauce
- Sliced bananas
- Whipped cream
For an extra-special dessert, serve a square of banana cake with vanilla ice cream and a drizzle of warm caramel sauce.
Make-Ahead and Storage Instructions
Make Ahead: Bake the banana cake one day ahead, allow it to cool completely, and cover it tightly. Prepare the cream cheese frosting separately and refrigerate it. Frost the cake when ready to serve.
Refrigerator: Because the frosting contains cream cheese, store the finished cake covered in the refrigerator for up to 4 days.
Room Temperature: The unfrosted cake can be stored in an airtight container in a cool place for up to 2 days. Do not leave the cream cheese-frosted cake at room temperature for more than 2 hours.
Freezing: Freeze the unfrosted cake in individual squares or as a whole cake, tightly wrapped, for up to 2 months for best quality.
Freezing Frosted Cake: Place the frosted cake in the freezer uncovered until the frosting is firm, then wrap carefully and freeze. Thaw overnight in the refrigerator.
Reheating: For a warm slice, microwave an unfrosted portion for approximately 10–15 seconds. For frosted slices, allow them to soften slightly at room temperature instead of microwaving.
Frequently Asked Questions
Can I use frozen bananas?
Absolutely! Thaw frozen bananas completely before using them. Drain off any excessive liquid and mash the bananas until smooth. Measure the required amount after thawing.
Why is my banana sheet cake dense?
This can happen if too much banana or flour is added, the batter is overmixed, or the cake is underbaked. Measure carefully and mix just until the dry ingredients disappear.
Can I make this cake without sour cream?
Yes! Plain Greek yogurt is an excellent substitute. You can also use plain yogurt, although the cake may be slightly less rich.
Can I use oil instead of butter?
Yes. Replace the melted butter with ½ cup vegetable or canola oil. The cake will remain moist, although it will have a slightly less buttery flavor.
Can I make this recipe in a different pan?
Yes! You can use a slightly larger or smaller rectangular baking pan, but the baking time will change. For a smaller, deeper pan, allow additional baking time and check the center with a toothpick.
Can I make banana bread muffins with this batter?
Definitely! Divide the batter between lined muffin cups, filling each approximately two-thirds full. Bake at 350°F (175°C) for about 18–22 minutes, or until a toothpick comes out clean.
How do I keep the banana cake moist?
Use ripe bananas, measure the flour accurately, avoid overbaking, and store the cooled cake properly covered.
Can I skip the cream cheese frosting?
Of course! The cake is delicious on its own. You can dust it with powdered sugar, spread softened butter over each slice, or drizzle it with a simple vanilla glaze.
Can I make this cake ahead for a party?
Yes! Bake the cake a day ahead and refrigerate it once frosted. Add any decorative banana slices just before serving because fresh bananas brown quickly.
Approximate Nutrition Information
Per serving, assuming 18 servings with cream cheese frosting:
- Calories: 390 kcal
- Carbohydrates: 55 g
- Protein: 5 g
- Fat: 17 g
- Saturated Fat: 9 g
- Sugar: 38 g
- Fiber: 1.5 g
- Sodium: 210 mg
Nutrition values are estimates and will vary depending on the banana size, ingredients, frosting quantity, and serving portions.
A Slice of Homemade Banana Heaven! 🍌
This Incredible Banana Bread Sheet Cake is everything you love about classic banana bread, made even more special with a soft cake texture and a generous layer of creamy homemade cream cheese frosting.
The ripe bananas provide natural sweetness and moisture, the cinnamon adds a warm comforting flavor, and the rich frosting makes every bite extra delicious.
It’s easy enough for everyday baking, beautiful enough for celebrations, and perfect for sharing with family and friends.
Grab those ripe bananas sitting on your counter, preheat your oven, and bake a sheet cake everyone will be asking you to make again!