Chocolate Swiss Roll with Chantilly Cream and Chocolate Sauce

The first few times I made a Swiss roll, I unrolled a cracked mess every time. Not always completely split — sometimes just a web of fractures across the surface that made the whole thing look like it had been through an incident. I tried lower temperatures, different flour ratios, more cream. None of it helped. The problem wasn’t the recipe. It was that I wasn’t rolling the cake while it was still hot.

That’s the technique this whole chocolate Swiss roll is built around. A meringue-based sponge gives you a lighter, more flexible cake than the standard method. But what actually prevents cracking is rolling the sponge immediately when it comes out of the oven — before it has time to set flat and lose its flexibility. Everything else in the recipe is secondary to that one step.

Prep: 25 minutes  ·  Bake: 12–15 minutes  ·  Chill: 30 minutes  ·  Serves 12

Everything You Need

Ingredient	Amount	Note
Chocolate Sponge
All-purpose flour	75g (⅔ cup)
Dutch-process cocoa powder	24g (¼ cup)	Dutch-process specifically — not natural cocoa
Baking powder	1 teaspoon
Fine salt	¼ teaspoon
Instant coffee powder	10g (1 tablespoon)	Deepens the chocolate flavor without tasting like coffee
Large eggs	4 (separated)	The whole recipe depends on this separation — yolks and whites in different bowls
Caster (superfine) sugar	140g (⅔ cup)	Divided: 70g for yolks, 70g for whites
Unsalted butter, melted and cooled	55g (¼ cup)
Vanilla extract	7g (1½ teaspoons)
Chantilly Cream Filling
Heavy cream, very cold	250g	Cold cream whips; warm cream doesn’t
Powdered sugar, sifted	50g
Vanilla bean paste or extract	7g (1½ teaspoons)	Paste gives you the flecks; extract is fine too
Mascarpone cheese, cold	250g	This is the stabilizer — keeps the cream firm for days
Chocolate Sauce
Dark chocolate, 60–70% cacao	340g	Quality matters here — use something you’d eat on its own
Unsalted butter	60g
Brown sugar	20g
Heavy cream	250g

this now & bake later ❤️

On the cocoa: Dutch-process specifically. It’s been treated to neutralize its natural acidity, which gives it a darker color and smoother flavor. Natural cocoa will react with the baking powder differently and give you a lighter, slightly more bitter result. Worth using the right one.

On the mascarpone: The filling is mascarpone Chantilly — whipped cream stabilized with mascarpone. The mascarpone is what keeps the cream firm for days in the fridge rather than weeping after a few hours. Use it cold, straight from the fridge, and watch the cream carefully once it goes in. It thickens fast.

Building the Roll

Prep and Preheat

Preheat to 350°F (180°C). Grease a 10×15 inch jelly roll pan, line it with parchment, then grease the parchment and dust it with cocoa powder. The cocoa dusting means the cake releases cleanly and you don’t get flour marks on the surface.

While you’re at it, lay a clean kitchen towel flat on your counter and dust it generously with cocoa powder. This is what you’ll roll the cake onto the moment it comes out of the oven — have it ready before the cake goes in.

Sift the Dry Ingredients

Sift the flour, cocoa, baking powder, salt, and instant coffee together into a bowl. The coffee doesn’t make the cake taste like coffee — it makes the chocolate taste more like chocolate. Sifting matters here because cocoa has a tendency to clump and you want it evenly distributed through the batter.

Whisk the Yolks

In a large bowl, whisk the egg yolks with 70g of the caster sugar until the mixture turns pale, thick, and falls from the whisk in a ribbon. Whisk in the melted butter (make sure it’s cooled slightly — not hot) and the vanilla.

Beat the Meringue to Stiff Peaks

Clean bowl, clean beaters — any grease will prevent the whites from whipping. Beat the egg whites on medium until frothy, then gradually add the remaining 70g of caster sugar while beating. Increase to high and beat until stiff, glossy peaks form. The peaks should stand straight up and not droop.

This meringue is the structure of the sponge. Don’t rush it and don’t under-beat it.

Fold — Gently

Fold one-third of the meringue into the yolk mixture first. This lightens the base so you’re not deflating the rest when you fold it in. Add the remaining meringue in two additions, folding each time with a light hand.

Fold in the sifted dry ingredients in two additions as well. The batter should be light, airy, and still hold some of the meringue’s volume. Spread it into the prepared pan and level it.

Bake — Watch It Closely

Twelve to fifteen minutes. The surface should spring back when lightly pressed. Not bounce dramatically — just return. That’s done.

Don’t overbake. An overbaked sponge is dry and brittle and will crack no matter what technique you use. If anything, err on the side of slightly underdone — it’ll finish as it cools.

Roll It Hot — This Is the Step

The moment the pan comes out of the oven: invert it onto the cocoa-dusted towel. Peel the parchment off carefully. Roll the cake up from the short end, with the towel inside, while it’s still hot. Don’t wait. Don’t let it cool. Do it now.

Set it seam-side down and leave it completely alone until it’s fully cool. This takes at least an hour. You can make the cream while you wait.

Make the Chantilly Cream

In a chilled bowl, whip the cold heavy cream, powdered sugar, and vanilla to soft peaks. Add the cold mascarpone and keep beating. It will thicken quickly — watch it. Stop when the cream is thick and holds its shape firmly. Overbeaten mascarpone cream looks grainy and can’t be fixed.

Fill, Re-roll, Chill

Unroll the completely cooled cake gently. Spread the Chantilly cream evenly over the surface, leaving a small border at the edges so it doesn’t squeeze out. Re-roll the cake without the towel this time. Wrap it tightly in plastic wrap and refrigerate for at least 30 minutes.

The Chocolate Sauce

Just before serving: melt the chocolate, butter, brown sugar, and cream together in a saucepan over low heat, stirring constantly until completely smooth. Let it cool a few minutes until pourable but not hot. Unwrap the chilled roll onto a serving platter and pour the sauce over the top. Serve immediately.

Make This for Someone

Once you’ve made a Swiss roll that doesn’t crack, you’ll understand why people show off about it. There’s a specific satisfaction to cutting the first slice and seeing the spiral hold clean. It looks difficult. It isn’t — if you roll it hot. Tell me in the comments how the first roll went and whether you stuck with the chocolate sauce or tried something different. Rate the recipe, save it on Pinterest, and subscribe for more.

Print