Ingredients
Vanilla Biscuit Ingredients
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
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Chocolate Biscuit Ingredients





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Cream and Assembly Ingredients
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


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Instructions
Step 1
Start by preheating your oven to 180°C (356°F). In a mixing bowl, beat the 3 eggs with 100 grams (0.22 pounds) of sugar until light and fluffy.
Gradually fold in the 100-120 grams (0.22-0.26 pounds) of flour, 1 teaspoon of baking powder, a pinch of salt, and, if using, a pinch of vanilla sugar. Be gentle to maintain the airy texture.
Pour the batter into a prepared baking pan and bake for 10-12 minutes. Keep an eye on it; it should be lightly golden.
Step 2
In another mixing bowl, repeat the process: beat the 3 eggs with 100 grams (0.22 pounds) of sugar until well combined.
Then add in the 50-60 grams (0.11-0.13 pounds) of flour, 40 grams (0.09 pounds) of cocoa powder, 1 teaspoon of baking powder, a pinch of salt, and a pinch of vanilla sugar if desired.
Fold the mixture gently, pour into a baking pan, and bake for 10-12 minutes or until set.
Step 3
In a separate bowl, whip 300 grams (0.66 pounds) of cold cream until stiff peaks form. In another bowl, combine 500 grams (1.1 pounds) of sour cream with 100 grams (0.22 pounds) of powdered sugar and mix well.
Gently fold the whipped cream into the sour cream mixture until smooth. This will give your cake a rich and creamy texture.
Step 4
Once your biscuits are baked and cooled, it’s time to assemble. Slice the vanilla and chocolate biscuits into layers.
In a serving dish, alternate layers of vanilla and chocolate biscuits, spreading the cream mixture and adding slices of bananas between the layers.
Once assembled, cover the cake with plastic wrap and refrigerate for a few hours, preferably overnight, to let the flavors meld together.
Step 5
After chilling, remove the cake from the refrigerator and carefully take off the plastic wrap.
Slice the cake and enjoy a delicious piece with friends and family. Happy baking!
Servings
Equipment
Use flat baking sheets to ensure even baking and easy removal of the sponge cakes.
Invest in a set of mixing bowls to keep your ingredients organized. Stainless steel or glass bowls are great options for mixing your batter.
A good whisk is essential for aerating your batter and achieving that light, fluffy texture.
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A rubber spatula is perfect for folding in your ingredients gently without losing volume.
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

For the creamiest frosting, a hand or stand mixer will save you time and effort when whipping the cream and mixing the cake batter.
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
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Variations
Vegan Variation: For a vegan twist, use flax eggs (1 tablespoon of ground flaxseed mixed with 2.5 tablespoons of water for each egg) and choose plant-based cream alternatives. You can also opt for coconut cream for the frosting! 🌱🥥 Your friends will be amazed to discover how tasty this vegan-friendly delight can be!
Faq
- What if my sponge cakes sink after baking?
This could mean that the eggs weren't whipped enough, which is crucial for creating the right amount of air. Make sure to whip them until they double in volume and form stiff peaks.
- Can I replace the bananas with another fruit?
Absolutely! Try using strawberries, peaches, or even a mix of berries for a burst of flavor. Just make sure to adjust the sweetness if the fruit is tart!
- Can I make the sponge cakes ahead of time?
Yes! You can bake the sponge cakes a day in advance and store them covered in plastic wrap. Just assemble the cake right before serving.
- What can I do if the frosting is too runny?
If your frosting turns out runny, chill it in the fridge for a bit and then re-whip. This helps it to firm up. You can also add more powdered sugar to thicken it.
- How can I ensure my cake layers are even?
Use a kitchen scale to measure your batter when pouring it into the baking sheets. This will help you achieve equal layers, making for a stunning cake!
- Is it normal for the cake to be soft after refrigeration?
Yes! This cake is meant to be creamy and soft. Refrigeration helps the flavors meld together beautifully. Enjoy the melt-in-your-mouth goodness!