INGREDIENTS
1
Egg, large
1/2 tsp
Baking soda
1/2 cup
Brown sugar
1/4 cup
Caster sugar
1/2 cup
Cocoa
1/2 tsp
Cornflour
1/2 cup
Dark chocolate chunks
1 cup
Plain flour
1 tsp
Vanilla extract
1/2 cup
White chocolate chunks
1/2 cup
Butter, unsalted
1 tbsp
Milk