White Chocolate Ganache Swiss Roll with Mango and Tonka

The first time I made this White Chocolate Ganache Swiss Roll, we were invited to friends’ house for dinner. And, of course, showing up empty-handed was never an option. 😄 The night before, I started thinking about a dessert that would look impressive without keeping me in the kitchen for hours. That’s how this Swiss roll came to life. The actual steps are quick and easy – most of the time is simply waiting for the cream to chill.

I started with the white chocolate ganache because it needs the longest time in the fridge. In about 10 minutes, everything was done: weighing the ingredients, heating the cream, pouring it over the chocolate, and popping it into the refrigerator. Then I moved on to the sponge cake, which took around 30 minutes from mixing to baking and rolling. So the hands-on time is surprisingly short. It’s one of those desserts you can make quietly in the background while getting on with the rest of your day.

I’ve made this Swiss roll twice since then because everyone asked for an “encore”. 😁 I love how light it tastes despite the rich ingredients. The combination of white chocolate, tonka bean, and juicy mango feels elegant and a little unexpected, yet it isn’t fussy at all. And I have to admit… it looks pretty spectacular on the table, too. 🤩

Why You’ll Love This White Chocolate Ganache Swiss Roll

I’m a big fan of desserts that look impressive but don’t require an entire day in the kitchen, and this White Chocolate Ganache Swiss Roll is exactly that. Once you slice into it, it looks like something you’d find in a high-end pastry shop, yet every component is surprisingly easy to make. As long as you give the ganache enough time to chill and don’t rush the process, the result is absolutely worth it.

What I love most is how balanced the flavors are. The sponge cake is soft and fluffy, the whipped white chocolate ganache is light and silky, and the fresh mango adds just the right amount of sweetness and brightness. It’s rich without feeling heavy, which is why even people who usually say they’re “not really into desserts” end up asking for a second slice.

How to Make a Soft Swiss Roll That Doesn’t Crack

If there’s one part of making a Swiss roll that intimidates most people, it’s the rolling. The good news? As long as the sponge is made properly, there’s really nothing to worry about.

• Whip the egg whites properly. They should be glossy and hold stiff peaks before you start folding in the other ingredients. Gently fold in the flour at the end using a spatula, taking care not to knock out all the air. That’s what gives the sponge its light, flexible texture.
• Don’t overbake the sponge. A Swiss roll sponge only needs about 10-12 minutes in a 180°C (350°F) oven. Leave it in for too long and it will dry out, making it much more likely to crack when rolled.
• Roll it while it’s still warm. I let the sponge cool for just a minute or two, dust it lightly with powdered sugar, then roll it up together with the baking paper and a clean kitchen towel. This helps the sponge keep its shape and stay flexible, so rolling it again after adding the filling is much easier.

How to Plan Ahead for the Best Results

If you want to make this White Chocolate Ganache Swiss Roll without any last-minute stress, start with the ganache. It only takes a few minutes to prepare, but it needs at least 6-8 hours in the refrigerator – ideally overnight. Once it’s fully chilled, you can whip it together with the mascarpone until it’s light, fluffy, and perfect for filling the cake.

While the ganache is chilling, you can make the sponge. In about 30 minutes, you’ll have it mixed, baked, rolled, and cooling. Once the ganache is ready, simply unroll the sponge, spread most of the cream evenly over the surface, add the mango and freeze-dried raspberries, then roll everything back up.

A final hour or two in the refrigerator gives the flavors time to come together and makes the Swiss roll much easier to slice neatly.

Tips & Frequently Asked Questions

What can I use instead of tonka bean?

If you can’t find tonka beans or ground tonka, a good-quality vanilla bean paste is the best substitute. You can also add a little finely grated lemon or orange zest if you’d like a fresher, slightly citrusy flavor. The overall character of the dessert will be a little different, but it will still be delicious.

Can I skip the freeze-dried raspberries?

Absolutely. I mainly use them for their pop of color and subtle tartness. If you don’t have any on hand, you can add a few fresh raspberries (just make sure they’re dry) or simply stick with the mango. The Swiss roll will still taste fantastic.

How long does this Swiss roll keep?

This White Chocolate Ganache Swiss Roll keeps well in the refrigerator for up to 2-3 days, stored in an airtight container or covered tightly. The sponge stays soft, and the ganache filling holds its texture beautifully.

I don’t recommend freezing it after it’s assembled, as the texture of the whipped ganache changes once thawed.

You’ll find the complete recipe below, including the exact ingredient measurements and step-by-step instructions.

White Chocolate Ganache Swiss Roll with Mango and Tonka

Recipe by Loredana Arion

Servings

12

slices

Prep time

45

minutes

Calories per slice

550

kcal

Resting time

8

hours 

A soft and fluffy White Chocolate Ganache Swiss Roll filled with whipped white chocolate ganache, mascarpone, tonka bean, and juicy mango. This elegant yet easy-to-make dessert is perfect for holidays, special occasions, or anytime you want to impress with a beautiful homemade treat.

Ingredients

• For the Sponge Cake

• 5 eggs

• 5 tablespoons granulated sugar

• 5 tablespoons all-purpose flour

• 5 tablespoons vegetable oil

• 1 packet vanilla sugar

• 1 pinch of salt

• 1 teaspoon powdered sugar (for rolling)

• For the White Chocolate Ganache Filling

• 400 g white chocolate (I use Callebaut white chocolate callets)

• 200 ml heavy whipping cream (at least 30% fat)

• 1 teaspoon ground tonka bean

• 500 g mascarpone cheese

• 200 g fresh mango, diced

• 15 g freeze-dried raspberries (optional)

Directions

• Make the Sponge Cake
• Separate the egg whites from the yolks. Whip the egg whites with a pinch of salt until foamy.
• Add the sugar and vanilla sugar, then continue mixing until the sugar has completely dissolved and the meringue is glossy.
• Lightly beat the egg yolks and gently fold them into the egg whites.
• Add the vegetable oil and fold it in carefully using a silicone spatula.
• Gradually fold in the sifted flour using gentle upward motions, rotating the bowl as you go to keep as much air in the batter as possible.
• Spread the batter evenly into a baking tray lined with parchment paper.
• Bake in a preheated oven at 180°C (350°F) for 10-12 minutes, or until the sponge is lightly golden.
• Once baked, let the sponge rest in the pan for about 2 minutes. Dust the surface lightly with powdered sugar, then transfer it (together with the parchment paper) onto a clean kitchen towel. Roll it up tightly from the short side and leave it to cool completely.
• Make the White Chocolate Ganache Filling
• Heat the heavy cream together with the ground tonka bean until it is just about to simmer. Do not let it boil.
• Place the white chocolate in a bowl and pour the hot cream over it. Stir until the chocolate has completely melted and the mixture is smooth.
• Cover the ganache with plastic wrap, making sure the wrap touches the surface, and refrigerate for 6-8 hours, preferably overnight.
• Once fully chilled, whip the ganache until it becomes light and airy.
• Add the mascarpone and continue mixing just until the filling is smooth, creamy, and well combined.
• Assemble the Swiss Roll
• Carefully unroll the cooled sponge and spread about 80% of the filling evenly over the surface.
• Scatter the diced mango and freeze-dried raspberries on top.
• Roll the sponge up tightly again, wrap the Swiss roll in plastic wrap, and refrigerate for 1-2 hours.
• Before serving, decorate with the remaining ganache, extra mango, freeze-dried raspberries, and a drizzle of melted white chocolate.