A Perfect Banana Cake (with Chocolate Ganache)

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There’s just something magical about a perfectly ripe banana, isn’t there? For me, it brings back memories of my grandma’s kitchen, always filled with the sweet scent of baking. She had a way of turning simple ingredients into pure comfort, and that’s exactly what I aimed for when I developed this recipe for A Perfect Banana Cake (with Chocolate Ganache). It’s a cake that feels like a warm hug, comforting and incredibly delicious, and it quickly became a family favorite in my own home.

A Perfect Banana Cake (with Chocolate Ganache) - finished dish

Why You’ll Love This A Perfect Banana Cake (with Chocolate Ganache)

  • It’s incredibly moist and tender, thanks to those mashed bananas and a touch of oil.
  • The chocolate ganache is buttery and glossy, adding that perfect rich counterpoint to the sweet banana.
  • It’s surprisingly easy to make, even for beginner bakers.
  • This cake is perfect for any occasion, from a casual weeknight dessert to a special gathering.

Ingredients You’ll Need

  • Neutral oil (e.g., vegetable or canola): This keeps the cake super moist without adding a strong flavor. You can use any neutral-tasting oil you have on hand.
  • Caster sugar and brown sugar: The combination gives a lovely depth of flavor and moisture. Caster sugar dissolves easily, and brown sugar adds that caramel-y note.
  • Eggs: They bind everything together and add richness. Make sure they’re at room temperature for better incorporation.
  • Large bananas: The star of the show! Make sure they’re ripe, with plenty of brown spots, for the best banana flavor. Mash them well with a fork.
  • Vanilla bean paste: This really elevates the vanilla flavor compared to extract. If you don’t have paste, vanilla extract works too!
  • Baking soda and baking powder: Our leavening agents! They work together to give the cake its beautiful rise and tender crumb.
  • Plain flour: All-purpose flour is perfect here.
  • Salt: Don’t skip it! It balances the sweetness and enhances all the other flavors.
  • Milk: Adds a little extra moisture to the batter.
  • Good quality milk chocolate (for ganache and decoration): Using good quality chocolate makes a huge difference in the ganache’s flavor and texture. I always reach for Whittakers Creamy Milk.
  • Butter (for ganache): This makes the ganache wonderfully buttery and soft, even after it sets.
  • Cream (for ganache): Heavy cream or whipping cream will give you the best ganache consistency.
  • Banana chips: For a delightful crunch and extra banana flavor on top!

How to Make A Perfect Banana Cake (with Chocolate Ganache) Step by Step

First things first, preheat your oven to 180ºC if you have a conventional oven, or 160ºC if you’re using fan bake. While that’s warming up, get your 20cm cake tin ready by greasing it and lining the bottom with baking paper. This ensures your beautiful cake won’t stick!


Now, grab a big mixing bowl. You’ll start by whisking together the oil, both types of sugar, vanilla bean paste, and salt until everything looks well combined. Then, whisk in your eggs, one at a time. This is important – make sure that first egg is fully mixed in before you add the second. It creates a smoother batter. Don’t worry if it looks a little clumpy at this stage; it all comes together!

Switch over to a spatula or a wooden spoon. Gently fold in your mashed bananas – this is where the magic happens and the banana flavor really starts to shine! Follow that with the baking powder, baking soda, and plain flour. Finally, fold in the milk until everything is just combined. Be careful not to overmix, as that can lead to a tough cake. Pour the batter into your prepared cake tin, level it out with the back of a spoon, and bake for about 45 minutes. You’ll know it’s ready when it’s golden brown and a skewer inserted into the center comes out clean or with just a few crumbs. Let it cool in the tin for 10 minutes, then flip it upside down onto baking paper to cool completely. This little trick helps create a perfectly flat top for decorating!

A Perfect Banana Cake (with Chocolate Ganache) - step by step

My Top Tips for Success

  • I always use really ripe bananas for the best flavor. Look for ones with lots of brown spots!
  • In my experience, weighing your ingredients, especially flour, makes a huge difference in baking consistency.
  • Trust me on this one: don’t overmix the batter once you add the flour. Just mix until combined.
  • Cooling the cake upside down truly gives you a perfectly level top – it’s a game changer for decorating!
  • For the ganache, let it cool completely until it’s thick but still spreadable. If it’s too warm, it will just run off the cake.

Common Mistakes to Avoid

  • Overmixing the batter: This develops the gluten in the flour too much, resulting in a tough, dense cake. Mix until just combined.
  • Using under-ripe bananas: Under-ripe bananas won’t give you the deep banana flavor or the moisture needed for this cake. Wait for those brown spots!
  • Not greasing and lining the cake tin properly: This is a simple step that prevents your beautiful cake from sticking and breaking when you try to remove it.
  • Trying to frost a warm cake: The ganache will melt and slide right off. Always ensure your cake is completely cool before adding the ganache.
  • Overheating the ganache chocolate: If melting in the microwave, go in short bursts and stir well. Overheated chocolate can seize or split.

How to Store A Perfect Banana Cake (with Chocolate Ganache)

  • Room Temperature: 2-3 days. Store in an airtight container. This cake is best enjoyed at room temperature.
  • Refrigerator: Up to 5 days. Store in an airtight container. Bring to room temperature before serving for the best texture and flavor.
  • Freezer (Cake only): Up to 2 months. Wrap individual slices or the whole cooled cake tightly in plastic wrap, then foil. Thaw at room temperature.

Frequently Asked Questions

Can I make this cake ahead of time?

Absolutely! The cake itself can be baked a day in advance and stored at room temperature. You can also make the ganache a day ahead and let it cool, then give it a good stir before spreading.

What if I don’t have vanilla bean paste?

No problem! You can substitute vanilla extract. Use the same amount, 1 teaspoon, for a lovely vanilla flavor.

My ganache is too thin, what do I do?

If your ganache is too thin, it likely needs more time to cool and thicken. You can pop it in the fridge for 10-15 minute increments, stirring every time, until it reaches a spreadable consistency.

Can I use a different kind of chocolate for the ganache?

Yes, you can! While milk chocolate is specified, you could use dark chocolate for a richer, less sweet ganache, or even white chocolate. Just be aware the flavor profile will change.

Why is my cake dense?

A dense cake is often caused by overmixing the batter once the flour is added. Mix just until combined. Also, ensure your leavening agents (baking soda and baking powder) are fresh and active.

I truly hope this A Perfect Banana Cake (with Chocolate Ganache) brings a little bit of comfort and joy to your kitchen. It’s such a delightful treat, and I can’t wait for you to try it! If you make it, please let me know how it turns out – I love hearing from you!

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A Perfect Banana Cake (with Chocolate Ganache)

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This incredibly moist banana cake, topped with a rich and buttery chocolate ganache, is a comforting dessert that’s easy to make and impossible to resist.

  • Author: Sophie
  • Prep Time: 20
  • Cook Time: 45
  • Total Time: 125
  • Yield: 8 servings
  • Category: Dessert
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian

Ingredients

Scale
  • 90 g neutral oil e.g. vegetable or canola
  • 100 g caster sugar
  • 100 g brown sugar
  • 2 eggs
  • 2 large bananas mashed with a fork
  • 1 tsp vanilla bean paste
  • 1/2 tsp baking soda
  • 1/2 tsp baking powder
  • 200 g plain flour
  • 1/2 tsp salt
  • 2 tbsp milk
  • 150 g good quality milk chocolate
  • 75 g butter
  • 75 g cream
  • 50 g milk chocolate
  • 50 g banana chips

Instructions

  1. Preheat the oven to 180ºC (conventional oven) or 160ºC (fan bake).
  2. Grease a 20cm cake tin.
  3. Line the bottom of the cake tin with baking paper.
  4. In a large mixing bowl, whisk together the oil, caster sugar, brown sugar, vanilla bean paste, and salt.
  5. Whisk in the first egg until fully incorporated.
  6. Whisk in the second egg until fully incorporated.
  7. Switch to a spatular or wooden spoon.
  8. Gently fold in the mashed bananas.
  9. Fold in the baking powder, baking soda, and plain flour.
  10. Finally, fold through the milk until just combined.
  11. Pour the cake batter into the prepared cake tin.
  12. Level out the batter using the back of a spoon or an offset spatular.
  13. Bake for 45 minutes, or until the cake is golden brown and cooked through.
  14. Insert a skewer or knife into the middle; if it comes out clean or with just a few crumbs, it is ready.
  15. Allow the cake to cool for 10 minutes in the tin.
  16. Flip the cake out, upside down, onto a sheet of baking paper.
  17. Allow the cake to cool fully.
  18. Break up 150g of milk chocolate and place it into a large heatproof bowl along with 75g of butter.
  19. Melt the chocolate and butter together over a bain-marie, stirring gently with a spatular until fully melted.
  20. Alternatively, melt in the microwave in 30-second increments, mixing between each, being careful not to overheat.
  21. Once fully melted, remove the bowl from the heat.
  22. Pour in the 75g of cream.
  23. Stir with a wooden spoon or spatular until the ganache is incorporated and glossy.
  24. Allow the ganache to cool completely until it thickens.
  25. If in a hurry, you can place it in the fridge, stirring every 10 minutes to help it cool evenly.
  26. Place the cooled cake onto a plate or cake board.
  27. Top the cake with the chocolate ganache.
  28. Use the back of a spoon or an offset spatular to lather the ganache over the top of the cake.
  29. Decorate the cake with banana chips.
  30. Use a peeler to shave 50g of milk chocolate curls onto the top of the cake.
  31. Serve and enjoy!

Notes

Use very ripe bananas for the best flavor and moisture.
Do not overmix the cake batter once the flour is added to ensure a tender crumb.
Ensure the cake is completely cool before applying the ganache.
If the ganache seems too thin, let it cool longer at room temperature or in the fridge, stirring occasionally.

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About the Baker

Hi, I'm Sophie!

Welcome to Sweet Craft! I share cozy, tried-and-true baking recipes — all tested in a real home oven so they work for you the first time.

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