Chocolate Log Cake Recipe: Soft, Rich and Easy to Roll
Learn how to make a soft chocolate log cake with a light cocoa sponge, creamy filling and smooth chocolate ganache using this easy step-by-step recipe.
Key Takeaways
What Is a Chocolate Log Cake?
A chocolate log cake is a rolled dessert made with a thin chocolate sponge cake, a creamy filling and a decorative chocolate coating. It is also commonly known as a chocolate Swiss roll or, when decorated for Christmas, a chocolate Yule log.
The sponge is baked in a shallow rectangular tray, rolled while warm and filled after cooling. The finished cake can be covered with chocolate ganache and textured to resemble a wooden log.
“A successful chocolate log cake should be light enough to roll, rich enough to feel indulgent and firm enough to slice cleanly.”
Chocolate Log Cake Ingredients
For the Chocolate Sponge
- 4 large eggs, at room temperature
- 100 g caster sugar
- 75 g all-purpose flour
- 25 g unsweetened cocoa powder
- 1 teaspoon baking powder
- 1 teaspoon vanilla extract
- 2 tablespoons milk
- Pinch of salt
For the Cream Filling
- 250 ml chilled whipping cream
- 2 tablespoons icing sugar
- 1 teaspoon vanilla extract
- 2 tablespoons chocolate spread, optional
For the Chocolate Ganache
- 150 g dark or semi-sweet chocolate
- 150 ml whipping cream
- 1 teaspoon butter, optional
Equipment You Will Need
How to Make Chocolate Log Cake
Prepare the Oven and Tray
Preheat the oven to 180°C conventional or 160°C fan. Lightly grease the Swiss roll tray and line the base with parchment paper.
Whip the Eggs and Sugar
Beat the eggs and caster sugar for approximately 5–7 minutes until the mixture becomes pale, thick and increased in volume. It should leave a visible ribbon when lifted.
Combine the Dry Ingredients
Sift the flour, cocoa powder, baking powder and salt together. Sifting removes lumps and helps the dry ingredients fold into the egg mixture evenly.
Fold the Batter Gently
Fold the dry ingredients into the whipped egg mixture in two or three additions. Add the vanilla and milk, then fold only until no dry streaks remain.
Spread the Batter Evenly
Pour the batter into the prepared tray and spread it carefully into the corners. Keep the surface as level as possible for even baking.
Bake the Chocolate Sponge
Bake for approximately 10–12 minutes. The sponge should spring back gently when touched and should not appear wet in the centre.
Roll the Sponge While Warm
Place a clean tea towel on the worktop and dust it lightly with cocoa powder or icing sugar. Turn the warm sponge onto the towel, remove the parchment and roll it gently from one short end.
Cool in the Rolled Shape
Leave the rolled sponge to cool completely. This step trains the cake to hold its curved shape and reduces the risk of cracking later.
Prepare the Cream Filling
Whip the chilled cream, icing sugar and vanilla until medium peaks form. Fold in chocolate spread for a richer chocolate cream filling, if desired.
Fill and Reroll the Cake
Carefully unroll the cooled sponge. Spread the cream evenly, leaving a small border around the edges, then roll it again without the towel.
Make the Chocolate Ganache
Heat the cream until steaming but not boiling. Pour it over the chopped chocolate, leave for two minutes and stir until smooth. Add butter for extra shine, if preferred.
Decorate and Chill
Allow the ganache to thicken slightly, then spread it over the cake. Drag a fork along the surface to create a bark-like texture and refrigerate for at least one hour before slicing.
Why These Ingredients Matter
| Ingredient | Purpose | Best Practice |
|---|---|---|
| Eggs | Create volume, structure and flexibility. | Use room-temperature eggs and whip until thick. |
| Caster sugar | Sweetens and stabilises the egg foam. | Beat it thoroughly with the eggs before folding. |
| Flour | Provides enough structure for rolling and slicing. | Fold gently to avoid removing trapped air. |
| Cocoa powder | Adds chocolate flavour and colour. | Use unsweetened cocoa and sift it well. |
| Whipping cream | Creates a light filling that balances the sponge. | Keep the cream and mixing bowl chilled. |
| Chocolate | Forms the rich ganache coating. | Chop finely so it melts evenly in the hot cream. |
Tips for a Soft Chocolate Roll Cake
They whip faster and create greater volume than very cold eggs.
This prevents dry lumps and makes folding easier.
Gentle folding preserves the air needed for a light sponge.
Even a few extra minutes can make the thin sponge dry and brittle.
This creates a thicker spiral and a traditional log shape.
Too much cream may squeeze out and make the cake difficult to roll.
Common Chocolate Log Cake Problems
| Problem | Possible Cause | Solution |
|---|---|---|
| Sponge cracks while rolling | The cake cooled flat or was overbaked. | Roll while warm and reduce the baking time next time. |
| Sponge feels dense | The eggs were underwhipped or the batter was overmixed. | Whip to the ribbon stage and fold the flour gently. |
| Cake sticks to the paper | The tray was not lined correctly or the sponge was underbaked. | Use good-quality parchment and peel it away while the cake is warm. |
| Cream filling runs out | The sponge was warm or too much filling was used. | Cool completely and leave a border around the filling. |
| Ganache is too thin | It is still warm or contains too much cream. | Let it cool until spreadable or add a little more melted chocolate. |
| Ganache is too firm | It cooled for too long or contains too much chocolate. | Warm it gently or stir in a small amount of warm cream. |
Chocolate Log Cake Filling Ideas
Classic Vanilla Cream
Whipped cream, icing sugar and vanilla extract.
Chocolate Cream
Whipped cream combined with chocolate spread or cooled melted chocolate.
Berry Cream
Vanilla cream with a thin layer of raspberry or strawberry jam.
Coffee Cream
Whipped cream flavoured with a small amount of instant coffee.
Hazelnut Filling
Cream mixed with hazelnut spread and finely chopped roasted nuts.
Cream Cheese Filling
Cream cheese, whipped cream and icing sugar for a slightly tangy filling.
How to Decorate a Chocolate Yule Log
Create a Branch
Cut a short diagonal piece from one end and attach it to the side of the cake with ganache.
Add Bark Texture
Drag a fork or small spatula through the ganache to form natural-looking lines.
Finish the Cake
Dust lightly with icing sugar and decorate with berries, chocolate curls or edible leaves.
Storage and Make-Ahead Instructions
Refrigerating
Store the finished chocolate log cake in an airtight container in the refrigerator for up to three days.
Making Ahead
Assemble the cake one day before serving. Chilling overnight allows the filling and ganache to set.
Freezing
Freeze the filled cake without ganache for up to one month. Wrap it securely and thaw it overnight in the refrigerator.
Chocolate Log Cake Checklist
Frequently Asked Questions
1. What is the difference between a chocolate log cake and a Swiss roll?
Both desserts use a rolled sponge with a filling. A chocolate log cake is usually covered with ganache or frosting and may be decorated to resemble a wooden log, while a Swiss roll is often served with a simpler finish.
2. Why did my chocolate log cake crack?
The sponge may have been overbaked, allowed to cool flat or rolled too tightly. Roll it gently while warm and avoid baking beyond the point when it springs back.
3. How do I roll a chocolate cake without breaking it?
Turn the warm sponge onto a clean towel, remove the parchment paper and roll it gently from a short end. Allow it to cool in that shape before adding the filling.
4. Can I make chocolate log cake without cream?
Yes. You can use chocolate buttercream, cream cheese frosting, chocolate spread, fruit jam or a dairy-free whipped filling instead.
5. Can chocolate log cake be made one day in advance?
Yes. The cake can be assembled and refrigerated one day before serving. Chilling helps it set and often makes slicing easier.
6. How long does chocolate log cake last?
A chocolate log cake with a cream filling can generally be stored in an airtight container in the refrigerator for up to three days.
7. Can I freeze chocolate log cake?
Yes. For the best texture, freeze the filled roll before adding ganache. Wrap it securely and thaw it overnight in the refrigerator before decorating.
8. Why is my chocolate sponge dense?
Dense sponge is usually caused by underwhipping the eggs or mixing the batter too aggressively. Whip the eggs until thick and fold the flour gently.
9. What chocolate is best for chocolate ganache?
Dark or semi-sweet chocolate produces a rich ganache that balances the sweet sponge and filling. Milk chocolate can also be used but creates a sweeter result.
10. How do I get clean slices from a chocolate log cake?
Chill the cake until firm, use a sharp knife and wipe the blade clean between slices. Briefly warming the knife can help cut through firm ganache.
Conclusion
This homemade chocolate log cake recipe combines a soft chocolate sponge, light cream filling and rich chocolate ganache in one impressive dessert. The most important steps are whipping the eggs properly, avoiding overbaking and rolling the sponge while it is still warm.
Serve the cake as a classic chocolate Swiss roll or decorate it as a festive chocolate Yule log. With careful folding, gentle rolling and enough chilling time, you can create a rich chocolate dessert that slices beautifully and stays soft.
