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Double Chocolate Banana Layer Cake: A Decadent Dessert You Must Try
If you’re looking for the ultimate dessert that combines rich chocolate flavor with the natural sweetness of ripe bananas, look no further than the Double Chocolate Banana Layer Cake. This show-stopping cake is moist, indulgent, and layered with a velvety chocolate frosting that makes every bite unforgettable. Whether you’re baking for a birthday, a holiday, or just a sweet craving, this recipe is sure to impress.
In this article, you’ll learn:
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Why this cake is a crowd favorite
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The exact ingredients you need
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Step-by-step instructions for perfect results
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Expert tips to elevate your cake
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Creative frosting and garnish ideas
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Storage and serving suggestions
Why You’ll Love This Double Chocolate Banana Layer Cake
Chocolate lovers rejoice! This cake isn’t just any chocolate cake—it’s double chocolate, meaning the cocoa richness runs through both the cake layers and the creamy frosting. Add in ripe bananas, and you get a naturally sweet, moist crumb that takes this dessert to a whole new level.
Here’s why this recipe stands out:
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Moist texture thanks to ripe bananas and buttermilk
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Deep chocolate flavor from unsweetened cocoa powder
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Creamy chocolate frosting that’s smooth and luxurious
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Easy to make with simple pantry ingredients
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Beautiful presentation as a layered cake with decorative toppings
If you’ve ever wondered, Can I combine chocolate and bananas in a cake? The answer is a delicious YES!
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Ingredients for Double Chocolate Banana Layer Cake
Before you start baking, gather these fresh ingredients. The key to the perfect cake lies in preparation.
For the Cake:
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3 ripe bananas, mashed
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2 cups all-purpose flour
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3/4 cup unsweetened cocoa powder
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2 teaspoons baking soda
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1 teaspoon baking powder
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1/2 teaspoon salt
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2 large eggs
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1 cup buttermilk
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1/2 cup vegetable oil
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1 teaspoon vanilla extract
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1 1/2 cups granulated sugar
For the Chocolate Frosting:
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1 cup unsalted butter, softened
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3 1/2 cups powdered sugar
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3/4 cup unsweetened cocoa powder
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1/2 cup heavy cream
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2 teaspoons vanilla extract
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Pinch of salt
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Chocolate shavings & banana slices for garnish (optional)
Step-by-Step Instructions for Double Chocolate Banana Layer Cake
Follow these easy steps to create your Double Chocolate Banana Layer Cake like a pro:
Step 1: Preheat and Prepare
Preheat your oven to 350°F (175°C). Grease and flour two 9-inch round cake pans. You can also line the bottoms with parchment paper for easy removal.
Step 2: Mash the Bananas
Peel your ripe bananas and mash them in a bowl until smooth. The sweetness and moisture from the bananas will keep your cake soft and flavorful.
Step 3: Combine Dry Ingredients
In a large mixing bowl, whisk together:
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Flour
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Cocoa powder
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Baking soda
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Baking powder
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Salt
This step ensures the leavening agents and cocoa are evenly distributed for consistent flavor and rise.
Step 4: Mix Wet Ingredients
In another bowl, beat together:
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Eggs
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Buttermilk
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Vegetable oil
Then add vanilla extract and granulated sugar. Whisk until the mixture is smooth and slightly thickened.
Step 5: Bring It All Together
Gently fold the wet mixture into the dry ingredients. Avoid over-mixing to keep the batter light. Finally, stir in the mashed bananas until fully incorporated.
Step 6: Bake to Perfection
Divide the batter evenly between your prepared pans. Smooth the tops and bake for 25–30 minutes, or until a toothpick inserted in the center comes out clean. The rich chocolate aroma will let you know it’s almost ready.
Step 7: Make the Chocolate Frosting
While the cakes cool, prepare the frosting:
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Beat softened butter until creamy.
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Gradually add powdered sugar and cocoa powder, alternating with heavy cream.
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Mix in vanilla extract and a pinch of salt.
Beat until the frosting is fluffy, smooth, and spreadable.
Step 8: Assemble and Decorate
Once the cakes are completely cooled:
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Place one cake layer on a serving plate.
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Spread a generous amount of frosting on top.
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Add the second layer and frost the entire cake.
For an elegant finish, garnish with chocolate shavings and banana slices.
Step 9: Slice and Enjoy
Your Double Chocolate Banana Layer Cake is now ready to serve! Each bite will be a heavenly mix of banana sweetness and chocolate decadence.
Double Chocolate Banana Layer Cake

Expert Tips for the Best Results
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Use overripe bananas: The browner, the better. They add natural sweetness and moisture.
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Don’t skip the buttermilk: It creates a tender crumb and enhances flavor.
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Cool completely before frosting: Otherwise, the frosting will melt.
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Add coffee to the batter: A tablespoon of brewed coffee deepens the chocolate flavor without tasting like coffee.
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Make ahead: Bake the cakes a day earlier and frost before serving for easier assembly.
Variations to Try
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Add chocolate chips: Stir in a cup of chocolate chips for extra chocolate bursts.
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Nutty twist: Sprinkle chopped walnuts or pecans between layers.
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Cream cheese frosting: For a tangy contrast, swap the chocolate frosting for cream cheese frosting.
How to Store Your Cake
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Room temperature: Keep in an airtight container for up to 2 days.
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Refrigerator: Lasts up to 5 days; bring to room temperature before serving.
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Freezer: Wrap unfrosted layers in plastic and freeze for up to 2 months. Frost after thawing.
Serving Suggestions
This cake pairs beautifully with:
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A cold glass of milk
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A cup of espresso or cappuccino
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Fresh berries for a fruity contrast
Frequently Asked Questions (FAQs)
1. Can I make this cake gluten-free?
Yes! Substitute the all-purpose flour with a 1:1 gluten-free baking blend.
2. What if I don’t have buttermilk?
Mix 1 cup of milk with 1 tablespoon of lemon juice or vinegar. Let it sit for 5 minutes before using.
3. Can I turn this into cupcakes?
Absolutely! Bake the batter in cupcake liners at 350°F for 18–20 minutes.
4. Why is my cake dry?
Over-baking or over-mixing can cause dryness. Stick to the recommended time and fold ingredients gently.
5. Can I make the frosting less sweet?
Reduce the powdered sugar by ½ cup and add a bit more cocoa for a balanced taste.
Final Thoughts
The Double Chocolate Banana Layer Cake is the perfect dessert for anyone who loves rich chocolate and moist, fruity layers. It’s versatile, easy to make, and always a hit at gatherings. Whether you’re a seasoned baker or a beginner, this recipe guarantees success.
Ready to bake your own masterpiece? Grab your ingredients and let’s get started—because life is too short not to enjoy cake!
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