Put 100g butter and 100g chopped dark chocolate in a heatproof bowl and set over a pan of hot water (or alternatively put in the microwave and melt in 30 second bursts on a low setting) and stir until smooth. Set aside to cool slightly for 15 mins.

Using an electric hand whisk, mix in 150g light brown soft sugar, then 3 large eggs, one at a time, followed by ½ tsp vanilla extract and finally 50g plain flour. Divide the mixture among the darioles or basins.

Carefully run a knife around the edge of each pudding, then turn out onto serving plates and serve with single cream.