Ingredients
Scale
For gluten free chocolate sponge:
- 2 oz 60 g dark chocolate, chopped
- 1/2 stick (57 g unsalted butter)
- 4 medium eggs (room temperature)
- 3/4 cup 150 g granulated sugar
- 3/4 cup 90 g plain gluten free flour blend (I’ve used a simple shop-bought gluten free flour blend containing only rice, potato and maize flour with no added xanthan gum)
- 1/4 tsp xanthan gum
- 1/4 cup 30 g cocoa powder
- 1/2 tsp baking powder
- 1/2 tsp baking soda
- pinch of salt
For mascarpone whipped cream filling:
- Click the link above for the recipe.
For chocolate ganache glaze:
- 6 oz 175 g 60% dark chocolate, chopped (if you use a higher cocoa percentage chocolate, you will need to increase the amount of cream to reach the right pouring consistency)
- 1 cup + 2 tbsp (265 mL heavy/double cream)
Instructions
For gluten free chocolate sponge:
- Pre-heat the oven to 355 ºF (180 ºC) and line a 10 x 15 inch (25 x 38 cm) baking tray or sheet with baking/greaseproof paper.
- In a heat-proof bowl above a pot of simmering water, melt the chocolate and butter together smooth and glossy. Set aside and allow to cool slightly.
- In a stand mixer with the whisk attachment, or with a hand mixer with the double beater attachments, whisk together the eggs and sugar until pale, fluffy and about tripled in volume.
- Add the melted chocolate and whisk for a few seconds until fully incorporated.
- Sift together the dry ingredients (gluten free flour blend, xanthan gum, cocoa powder, baking powder, baking soda and salt), and fold them gently into the fluffy chocolate mixture, until no flour clumps remain.
- Transfer to the lined baking tray and bake at 355 ºF (180 ºC) until an inserted toothpick comes out clean (about 10 – 12 minutes).
- Once baked, leave the sponge in the baking tray for 2 minutes, then turn it out of the baking tray onto a piece of baking paper generously dusted with powdered sugar. Peel away the top layer of baking paper, and roll up the sponge. Leave it cool completely.
For mascarpone whipped cream filling:
- Click the link above for the recipe.
For chocolate ganache glaze:
- Place the chopped dark chocolate into a heat-proof bowl.
- In a saucepan, bring the heavy/double cream to a boil, then pour it over the chocolate. Allow this to stand for 2 – 3 minutes, then stir until smooth. You should get a smooth runny ganache that’s easily pourable.
Assembling the chocolate Swiss roll:
- Gently unroll the cooled sponge, and spread the filling into an even layer onto top.
- Carefully re-roll the sponge, and chill it in the fridge for about 1/2 hour.
- Once chilled, drizzle the Swiss roll with the chocolate ganache glaze. (If the glaze is to firm, reheat it briefly in the microwave or over some simmering water.)
- Allow the chocolate ganache glaze to set, and enjoy!
Storage:
- The chocolate Swiss roll keeps well for 3 – 4 days in a cool dry space (the fridge works too), wrapped in cling film or in a closer container
- Prep Time: 30 minutes
- Cook Time: 10 minutes
- Category: Cake, Dessert