Preheat the oven to 180C/350F/Gas 4. Sift the flour, salt, sugar, baking powder and cocoa powder into a bowl.
2. Add the milk, butter, egg and vanilla extract and mix with an electric beater until combined. Pour into four 250ml (8¾fl oz) greased pudding moulds.
3. To make the topping, stir the brown sugar and cocoa powder in a bowl to combine, then sprinkle it over the pudding batter.
4. Pour boiling water carefully over the puddings, then bake for 20-25 minutes.
5. Serve with thick cream.

i used a big dish and cooked it for 1 hour .