Delia Smith Swiss Roll

Let’s get something off my chest: I hated making Swiss rolls for years. Every single one cracked on me — like a fault line running through my kitchen pride. I tried baking longer, shorter, hotter, cooler… nothing helped. Turns out, the answer was dead simple: roll the blooming thing while it’s still warm. Delia Smith’s Swiss Roll finally turned things around for me.

This version — rich chocolate sponge, whipped cream filling, glossy ganache — is elegant, yes, but not delicate. It holds together, slices beautifully, and actually tastes like chocolate rather than air. Best of all? It only bakes for 15 minutes, which means even on your busiest day, you can pull this off with minimal stress (and maybe just a little muttered swearing if your towel sticks).

This chocolate Swiss roll isn’t just about looking pretty — it’s properly indulgent, with creamy filling and real cocoa punch. I’ve tweaked Delia’s approach slightly for reliability’s sake, but the soul of it is still hers.

Ingredients List

For the Cake:

• 4 large eggs, separated — room temperature is key for volume.
• ¾ cup granulated sugar, divided (150g)
• ¼ cup vegetable oil (60ml)
• 2 tsp vanilla extract
• ¼ tsp salt
• ½ cup all-purpose flour (60g) — don’t pack it down, or you’ll regret it.
• ¼ cup unsweetened cocoa powder (25g)
• ½ tsp baking powder

For the Whipped Cream Filling:

• 1½ cups heavy whipping cream (360ml)
• ¼ cup powdered sugar (30g)
• 1 tsp vanilla extract — or swap in almond or peppermint for flair.

For the Ganache Topping:

• ¾ cup semisweet chocolate chips or chopped bar (135g)
• ½ cup heavy cream (120ml)
• 1 tsp vegetable oil — helps that shine stay glossy.

How to Make It (Instructions)

1. Prep the pan and oven

Preheat your oven to 350°F (180°C). Grease a 12×17-inch jelly roll pan and line it with parchment. Grease the parchment too — don’t skip this.

2. Whip the egg whites

In a spotless bowl, whip the egg whites and ¼ cup sugar until stiff peaks form (about 5 minutes). You’ll feel smug when they hold their shape like a meringue.

3. Beat yolks + mix base batter

In another bowl, beat egg yolks, the remaining ½ cup sugar, oil, vanilla, and salt until light and foamy.

4. Add the dry ingredients

Sift in the flour, cocoa, and baking powder. Mix until just combined. Don’t overbeat — the sponge will rebel.

5. Fold in the egg whites

Gently fold the whites into the batter in three parts. No white streaks, no rushing.

6. Bake

Pour the batter into the prepared pan and level it out. Bake for 12–15 minutes, until it springs back lightly and a toothpick comes out clean.

Confession: I always forget to set the timer and have to stab it five times to guess doneness. Don’t be me.

7. Roll it up

Lay a clean kitchen towel on the counter and dust it generously with cocoa powder. Flip the hot cake onto the towel, peel off the parchment, and immediately roll it up from the short end. Let it cool rolled.

8. Whip the cream

Beat the cream, powdered sugar, and vanilla until soft peaks form.

9. Fill and roll again

Once the cake is cool, gently unroll it (you may get a tiny crack — no one cares). Spread with whipped cream. Roll it back up tightly but gently.

10. Ganache it up

Pour hot cream over chopped chocolate, let sit for 10 mins, then stir until glossy. Add the oil. When it’s thick but pourable, spoon over the roll. Chill 30 mins to set.

Common Mistakes

Why did my Swiss roll crack?
You probably waited too long to roll it. It needs to be hot — not warm, hot.

Why is my sponge rubbery?
You overmixed. Once flour goes in, mix as little as humanly possible.

Why is my cake sticking to the towel?
You didn’t dust enough cocoa on the towel — be generous. Or, you used a damp towel. Don’t.

Why did my filling squish out?
Too much cream or rolling too tight. Spoon off the excess — or just eat it.

Storage Tips

Fridge: Wrap tightly in clingfilm or store in an airtight container. Keeps beautifully for 3 days.

Freezer: Freeze whole or in slices. Wrap in two layers (clingfilm + foil or freezer bag). Thaws overnight in the fridge.

What to Serve With It

• Fresh berries — Raspberries or strawberries cut the richness.
• Espresso — A bitter shot against all that sweetness.
• Vanilla bean ice cream — Because why not double down?

FAQ

Can I make this gluten-free?
Yes! Use a 1:1 gluten-free flour blend. Just be gentle when rolling — GF sponges are a bit more fragile.

Can I skip the ganache topping?
Absolutely. Dust with cocoa or powdered sugar instead. Still classy, less rich.

Do I have to use a towel to roll it?
Yes, unless you want cake stuck to your hands. A baking parchment might work, but towels give best results.

Can I make this ahead of time?
Yes. Best made the day before — chilling helps it set, and the flavors meld beautifully.

Try More Recipes:

• Delia Smith Gooseberry Jam Recipe
• Delia Smith Flapjacks
• Delia Smith Chicken Marengo
• Delia Smith Cheese And Onion Pie