Chocolate Swiss Roll with Silky Mousse

Chocolate Swiss Roll with Silky Mousse combines soft chocolate sponge with a creamy chocolate mousse filling.

This Chocolate Swiss Roll with Silky Mousse has a soft chocolate exterior and a smooth, fluffy filling hidden inside. A light dusting of cocoa gives each slice a lovely finishing touch.

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Rolling cake takes a little nerve. Would you try this chocolate mousse version?

Why You Will Love and Enjoy This Chocolate Swiss Roll with Silky Mousse

• This Swiss Roll with Mousse gives you a soft chocolate sponge wrapped around a creamy, chocolate-filled centre. It’s a lovely homemade dessert that looks special without needing fancy decorating skills. Make it ahead, chill it, and slice it when you’re ready to serve.
• Light chocolate sponge: Soft, tender, and easy to slice when properly baked.
• Creamy chocolate mousse: A smooth filling that adds richness without making the dessert feel too heavy.
• A lovely make-ahead dessert: Prepare it in advance so you can spend less time in the kitchen when guests arrive.

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Additional Information, Tips and Suggestions

• Why should the eggs be at room temperature? Room temperature eggs generally whip more easily and help create the volume needed for a flexible sponge. Beat the eggs and castor sugar for about 4 minutes, until pale, thick, and fluffy.
• How do I stop the sponge from cracking? Don’t overbake it, and roll it while it’s still warm using fresh parchment. Let it cool completely in its rolled shape before unrolling it gently to add the filling. Small cracks can happen and won’t spoil the taste.
• How do I know when the sponge is baked? Begin checking at 10 minutes. The surface should spring back lightly when touched, and a toothpick inserted into the centre should come out clean or with a few dry crumbs. An overbaked sponge is more likely to crack.
• Why add coffee to the chocolate sponge? The 1/2 tsp instant coffee granules dissolved in 1 tsp hot water and will help deepen the chocolate flavour without making the sponge taste strongly of coffee. You can leave it out if you prefer.
• How cool should the melted chocolate mixture be? Let it cool until lukewarm but still fluid before combining it with the whipped cream. If it’s too hot, it can deflate the cream. If it becomes too cold and firm, it may create chocolate flecks in the mousse.
• How do I get a fluffy mousse filling? Whip the cold 1 cup whipping cream until stiff peaks form. Incorporate the cooled chocolate mixture gently, stopping as soon as the filling is smooth. Overmixing can make the mousse grainy or cause it to lose volume.
• What if the mousse is too soft? Chill it briefly to help it firm up before spreading. Make sure the cake has cooled completely and refrigerate the assembled roll for at least 1 hour before slicing.
• Can I use milk chocolate or dark chocolate? Yes. Semi-sweet chocolate gives a balanced chocolate flavour, dark chocolate makes the filling more intense, and milk chocolate produces a sweeter result. Chocolate chips also work, although some varieties melt more thickly than baking chocolate.
• Can I substitute the canola oil? Use another neutral vegetable oil in the same amount. Avoid strongly flavoured oils that could change the taste of the sponge.
• Can I make the Swiss roll ahead? Yes. Prepare it the day before serving, cover it well, and refrigerate. Add the final cocoa dusting just before serving for a fresher appearance.
• How should leftovers be stored? Keep the filled roll in an airtight container in the refrigerator for up to 3 days. Because the mousse contains dairy, don’t leave the dessert at room temperature for extended periods.
• Can I use a different baking tin? The specified 36 x 28 cm tin is best for the intended sponge thickness. A smaller tin produces a thicker sponge that may be harder to roll, while a larger tin creates a thinner sponge that can dry out more quickly.
• How can I get neat slices? Chill the roll thoroughly, use a sharp knife, and wipe the blade between cuts. This helps keep the chocolate sponge and mousse layers distinct.

Chocolate Swiss Roll with Silky Mousse is a delicious choice for anyone who enjoys a soft chocolate sponge and a creamy filling. The warm rolling technique, silky mousse, and simple cocoa finish make this homemade dessert both achievable and impressive. Chill it ahead, slice it neatly, and serve a chocolate treat that’s ready to take centre stage at your next gathering.