
A decadent and moist chocolate sponge topped with a velvety cream cheese layer and a smooth dark chocolate glaze. This crowd-pleasing sheet cake is perfect for parties, celebrations, or a special afternoon tea.
Preheat your oven to 170°C (150°C fan/gas mark 3). Grease and line a 20x30cm rectangular cake tin with baking parchment, ensuring the paper overhangs slightly for easy removal.
In a large bowl, beat the egg yolks with 6 tablespoons of icing sugar until the mixture is pale and thick. Gradually whisk in 5 tablespoons of hot water until fully incorporated.
Sift together the plain flour, baking powder, and cocoa powder. Add this dry mixture to the egg yolks one tablespoon at a time, alternating with the sunflower oil. Mix gently after each addition until just combined.
In a separate clean bowl, whisk the egg whites until they form stiff peaks. Using a large metal spoon or spatula, gently fold the egg whites into the chocolate batter in three batches, being careful not to deflate the air.
Pour the batter into the prepared tin and bake for 15-20 minutes, or until the cake has risen and a skewer inserted into the center comes out clean. Leave the cake to cool completely in the tin.
To make the cream layer, beat the softened butter, soft cheese, and 150g of icing sugar together until completely smooth and fluffy. Spread the frosting evenly over the cooled sponge.
For the chocolate icing, melt the dark chocolate and 100g of butter together in a heatproof bowl set over a pan of barely simmering water (bain-marie). Ensure the bottom of the bowl does not touch the water. Once smooth, pour the glaze over the cream cheese layer.
Place the cake in the refrigerator and let it set for at least 2 hours. Slice into squares and serve chilled.
For the smoothest frosting, ensure your butter and soft cheese are at room temperature before mixing. To get clean slices, dip your knife in hot water and wipe it dry between each cut.




