Inspiring vegetarian recipes
Try our vibrant veggie dishes, from meat-free lasagne to vegetable curry and vegetarian chilli
Heat the oven to 180C/fan 160C/gas 4. Butter a deep, 23cm loose-bottomed cake tin and line with baking paper.
Put the butter, chocolate and vanilla in a heatproof bowl over a pan of gently simmering water, stirring until combined and smooth (alternatively, melt in 20-second blasts in the microwave). Remove from the heat and cool for 5 minutes.
When the mixture has slightly cooled, whisk in the eggs, followed by the yogurt, until smooth. Mix together the sugars, flour, bicarb and cocoa powder in a large bowl. Gradually pour the wet ingredients into the dry, whisking continuously, until you have a smooth batter. Fold in the grated courgette until combined.
Pour the batter into the tin and bake for 1 hour 15-1 hour 30 minutes or until a skewer inserted into the middle comes out clean. Leave to cool completely in the tin.
To make the icing, put the cream, sugar and cocoa powder in a large bowl and whisk to soft peaks. Remove the cake from the tin, put on a serving plate and dollop the icing on top, spreading it with the back of a spoon to cover the surface.