This prune and mascarpone cake pairs a moist chocolate sponge with a smooth filling made from prunes, coconut milk and mascarpone. The sponge is split into two layers, lightly moistened with milk and filled with the creamy prune mixture. The recipe makes one 24 cm (9.5-inch) cake serving about eight people.
Recipe at a Glance
- Prepare the chocolate sponge batter and bake it at 185 °C (365 °F) for 35 minutes.
- Cook the prunes with powdered sugar and water, then blend them with coconut milk.
- Add mascarpone to the prune mixture and blend until smooth.
- Split the sponge, moisten both layers with milk, add the filling and chill the cake thoroughly.
Chocolate Sponge and Creamy Prune Filling
The chocolate sponge is made with butter, eggs and melted baking chocolate. The filling combines cooked prunes, coconut milk and mascarpone. As in the original tested recipe, you may replace the coconut milk with heavy cream. A few spoonfuls of milk keep both sponge layers moist after the cake is assembled.
Ingredients for 8 Servings
For the chocolate sponge
- 150 g baking chocolate
- 150 g all-purpose flour
- 150 g butter
- 150 g granulated sugar
- 6 eggs
- 1 packet vanilla sugar (8 g)
- 1 packet baking powder (13 g)
- 1 heaped tablespoon chocolate powder
- 2 tablespoons milk
- 1 tablespoon oil
For the filling
- 250 g prunes
- 200 ml coconut milk
- 500 g mascarpone cheese
- 3 heaped tablespoons powdered sugar
For finishing
- milk
- chocolate powder
- powdered sugar
Instructions
Cream the butter: Beat the butter, vanilla sugar and granulated sugar until light and fluffy. Add the eggs and mix with an electric mixer until the ingredients are combined.
Melt the chocolate: Add the milk and oil to the chocolate, then melt it over a double boiler.
Finish the sponge batter: Add the melted chocolate to the beaten egg mixture and mix well. Gradually and gently fold in the flour, baking powder and chocolate powder mixture.
Pour the batter into the pan: Pour the sponge batter into a greased 24 cm (9.5-inch) round cake pan. Tap the pan gently so the batter spreads evenly across the base.
Bake the sponge: Place the pan in an oven preheated to 185 °C (365 °F) and bake for 35 minutes.
Cool the sponge: Remove the baked sponge from the pan and leave it to cool completely.
Cook the prunes: Place the prunes in a saucepan, add the powdered sugar and pour in enough water to cover them. Bring to a boil and cook until the water has evaporated, about 17 minutes.
Blend the prunes: Add the coconut milk to the cooked prunes. You may use heavy cream instead. Blend until smooth with an immersion blender.
Add the mascarpone: Add the mascarpone to the blended prunes and mix until smooth.
Split the sponge: Slice the cooled sponge horizontally into two even layers.
Moisten the bottom layer: Return the bottom sponge layer to the cake pan and moisten it with a few tablespoons of milk.
Assemble the cake: Spoon the prune filling over the sponge and spread it evenly across the surface. Cover with the top sponge layer and moisten it with a few tablespoons of milk as well.
Chill the cake: Refrigerate the prune cake until thoroughly chilled.
Decorate and serve: Remove the cake from the pan, dust with chocolate powder and powdered sugar, then slice and serve.
Frequently Asked Questions
How long should I bake the chocolate sponge?
Bake the sponge for 35 minutes in an oven preheated to 185 °C (365 °F).
How should I cook the prunes?
Add powdered sugar and enough water to cover the prunes. Cook for about 17 minutes, or until the water has evaporated.
Can I replace the coconut milk?
Yes. As in the original recipe, you may replace 200 ml coconut milk with the same amount of heavy cream.
What size cake pan do I need?
Use a 24 cm (9.5-inch) round cake pan.













