First, preheat your oven to 356 Degrees Fahrenheit or 180 Degrees Celsius
Melt butter in a medium saucepan
Now add the sugar, I know it says caster sugar on the supplies list but we had none left, so I used raw sugar, which works fine!
Next sieve the cocoa over the butter and sugar
Put the eggs in a mug/cup and lightly whisk them with a fork
Pour them in too
Don't forget to add vanilla!
Mix it all together
Until it looks something like this
(Birds eye view)
Now sieve the flour and baking soda over the mixture
Until it looks like this
Now put in your chocolate, I used a combination of milk and white chocolate
Mix it up
Now put it in a tray, about 3 1/2 cm deep, 26cm horizontally and 16cm vertically
Put it in the oven!
Set the timer for about 30 minutes or so
Finished! It should be a bit soft but will harden whilst it cools. Serve straight away or store in a container on the kitchen bench or in the fridge, both work fine