This Double Chocolate Banana Layer Cake smells like a cozy bakery the moment it hits the oven, with deep banana fragrance wrapped in cocoa aroma that makes the whole kitchen feel like home.
I love making this cake when the bananas are at their peak ripeness and I want a special yet simple dessert for family, friends, or quiet evenings at home.
SaveAs someone who spends the day writing and tasting, I rely on this cake to feel indulgent but still approachable, and it has become my go-to recipe for celebrating small wins.
Double Chocolate Banana Layer Cake Recipe
Ingredients
Cake
Chocolate Buttercream
Dark Chocolate Ganache
Instructions
- Preheat and prepare pans
Preheat your oven to 350 degrees Fahrenheit. Grease two 9 inch round cake pans, line the bottoms with parchment paper, and grease the parchment.
- Whisk dry ingredients
In a medium bowl, whisk together the flour, baking soda, and salt until well combined and set aside.
- Mix wet ingredients in a large bowl
In a large mixing bowl, beat the mashed bananas, granulated sugar, brown sugar, eggs, oil, vanilla, and coffee or buttermilk until smooth and slightly thick.
- Combine wet and dry mixtures
Gradually add the dry ingredients to the wet ingredients, mixing on low speed until just combined. Avoid over mixing to keep the cake tender.
- Divide and bake
Divide the batter evenly between the two prepared pans. Smooth the tops with a spatula and bake for 30 to 35 minutes, until a toothpick inserted in the center comes out clean.
- Cool the cakes
Let the cakes cool in the pans for 10 minutes, then run a knife around the edges and invert onto a wire rack to cool completely before frosting.
- Make chocolate buttercream
Beat the softened butter until smooth, then add powdered sugar, cocoa powder, salt, and vanilla on low speed to avoid dust. Increase speed and beat in the cream until light and fluffy, about 2 to 3 minutes.
- Make dark chocolate ganache
Heat the heavy cream in a small saucepan until it simmers, then pour it over the chocolate chips in a heatproof bowl. Let sit for 5 minutes, stir until smooth, and add butter for extra shine.
- Assemble the cake
Place one cake layer on a serving plate, spread a generous layer of chocolate buttercream, top with the second layer, and spread more buttercrumb on top and sides for a smooth finish.
- Glaze and chill
Pour the warm dark chocolate ganache over the cake, allowing it to drip down the sides slightly. Chill for at least 30 minutes to set the ganache before slicing.
Substitutions and variations
- If you do not have coffee, use hot water plus 1 teaspoon cocoa powder for deeper flavor.
- For a gluten free version, swap the all-purpose flour with a gluten free 1 to 1 flour blend.
- To make this dairy free, use vegan butter, plant based milk, and dairy free chocolate chips.
- If you prefer a lighter cake, use 2 teaspoons baking powder instead of baking soda and rely on the mashed bananas for rise.
Chloe's tips
- Mash bananas until mostly smooth with a few small lumps for a tender, moist crumb.
- Cool the cakes fully before glazing to prevent the ganache from melting too quickly.
- For extra banana flavor, brush each layer with a thin mixture of mashed banana and a teaspoon of vanilla.
How to store it
- Store the cake in the refrigerator in an airtight container for up to 4 days.
- Let the cake sit at room temperature for about 30 minutes before serving for the best texture.
Serving suggestions
Serve neat slices with a little extra ganache on the plate and a sprinkle of shaved chocolate for an elegant presentation.
- Pair with a scoop of vanilla ice cream
- Garnish with toasted sliced almonds or crushed cookie crumbs
- Add fresh banana rounds on top for color and extra banana flavor
Frequently asked questions
Can I make the cake layers ahead of time?
Yes, bake and cool the layers fully, wrap them in plastic wrap, and store at room temperature for up to 1 day or freeze for up to 1 month. Bring to room temperature before frosting.
Why did my cake turn out dense?
Using cold ingredients or over mixing can cause density. Make sure eggs and butter are at room temperature and mix the batter just until combined.
Can I use milk chocolate instead of dark chocolate?
Absolutely. Milk chocolate creates a sweeter, creamier ganache. Just keep in mind it may set softer than dark chocolate.
How do I get a flat top for stacking?
After baking, run a sharp knife gently across the top while the cake is still warm to level it before cooling completely.
Let's get cooking!
I hope you enjoy baking and sharing this Double Chocolate Banana Layer Cake, because it truly feels like dessert with a warm hug in every bite.
