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Eggless London chocolate cake with soaked cocoa sponge, whipped salted caramel, and dark chocolate ganache for a rich layered celebration cake, with grams-first measurements for better baking consistency.
This eggless London chocolate cake is built like a celebration cake rather than an everyday tray bake. It uses a soft cocoa sponge, a light chocolate soak, whipped salted caramel between the layers, and a final dark ganache finish. The overall result is rich, but the different components keep the cake from feeling flat or overly dense.
It is the kind of cake that benefits from planning. None of the individual steps are especially difficult, but the caramel, ganache, and overnight chill all matter if you want the clean layered look and the soft, set texture that makes this style of cake so appealing.
The recipe is written metric-first in grams for more reliable baking, with cup references included where they help.
The sponge is mixed as an eggless tray sponge, which makes it easier to divide into even layers after baking. Yogurt, milk, oil, and melted chocolate keep the crumb soft, while the vinegar helps the batter lift once it hits the oven.
The filling balance is what makes the cake work. The chocolate soak adds moisture without making the layers wet, the ganache gives structure, and the whipped salted caramel adds a softer and more aerated layer between the sponge sheets.
Give each component time to cool to the right consistency. The soak should be completely cold before brushing, the ganache should be spreadable rather than runny, and the caramel should be fully chilled before whipping. If one of these goes in too warm, the layers become harder to control.
When assembling, keep the ganache layer thin and the caramel layer even. That helps the cake hold its shape once chilled and makes the final slices look more defined.
This cake is best chilled overnight before serving. That rest gives the sponge time to absorb the soak properly and helps the ganache and caramel settle into clean layers. Use a sharp knife and wipe it between cuts for neater slices.
Leftovers keep well in the fridge for several days. Let slices stand briefly at room temperature if you want the caramel and ganache to soften slightly before eating.
Treat this as a rich celebration dessert rather than an everyday snack. One modest slice is usually enough because the cake includes both caramel and ganache.
This cake makes the most sense for birthdays, dinner parties, or occasions when you want a more dramatic chocolate dessert that can be made ahead and served in clean slices.
If you are serving this cake after a meal, keep the rest of the menu lighter and less rich. The cake already brings plenty of sweetness, fat, and chocolate intensity on its own.
Eggless London chocolate cake with soaked cocoa sponge, whipped salted caramel, and dark chocolate ganache for a rich layered celebration cake, with grams-first measurements for better baking consistency.

Bake the sponge just until set so the layers stay soft after chilling.
Cool the chocolate soak fully before brushing it onto the cake layers.
Chill the caramel thoroughly before whipping so it becomes light and stable.
Let the ganache cool until spreadable before assembling to avoid sliding layers.
Chill the finished cake overnight for the best texture and cleaner slices.
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Line a 40 x 60 cm tray and heat the oven to 160 to 165C fan.
Whisk together the flour, cocoa powder, baking powder, baking soda, and salt in a large bowl.
In a second bowl, whisk the sugar, oil, milk, yogurt, melted chocolate, and vanilla until smooth.
Pour the wet mixture into the dry ingredients and mix until no dry streaks remain.
Stir in the vinegar last, then spread the batter evenly in the lined tray.
Bake for 12 to 15 minutes until the sponge is set and springs back lightly.
Cool completely before cutting into 4 equal layers.
Heat the milk, sugar, cocoa powder, and salt together in a small saucepan.
Whisk until the sugar and cocoa dissolve completely.
Cool fully before using.
Add the caster sugar to a heavy-bottomed saucepan over medium heat and melt it to a deep amber caramel.
Slowly whisk in the warm cream in several additions until smooth.
Let the caramel cool until warm, then whisk in the softened butter in several additions.
Whisk in the sea salt, transfer to a bowl, cover the surface directly, and chill for at least 4 hours or overnight.
Whip the chilled caramel on medium-high speed for 3 to 5 minutes until lighter, fluffy, and spreadable.
Heat the cream until steaming, then pour it over the chopped chocolate.
Let it sit for 1 minute, then stir until smooth.
Add the butter and mix again until glossy.
Cool until spreadable but not firm.
Place the first sponge layer on a board or tray and brush lightly with the chocolate soak.
Spread a thin layer of ganache over the sponge, then add a layer of whipped salted caramel.
Repeat with the next 2 sponge layers so you have 3 caramel-filled layers in total.
Add the final sponge layer and brush it lightly with the remaining soak.
Cover the cake with a thin ganache crumb coat and chill briefly.
Finish with a final ganache coating and chill the cake overnight before slicing.
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Serving Size: 1 slice (1/16 cake)
* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
7/25/2026
The ganache and whipped caramel combination worked really well. I chilled the layers between stages and got clean slices.
7/25/2026
Rich cake, but the soak kept the sponge from feeling dry. I would absolutely make it a day ahead again.
7/25/2026
The sponge stayed very soft after chilling and the caramel layers gave the cake a proper bakery-style finish.
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