Heat the pistachios in a large saucepan over a medium heat for 1-2 mins until lightly golden and smelling toasted. Tip onto a plate.

Put the Quaker Rolled Oats into the pan with the milk, cocoa, 200ml water and a small pinch of salt. Cook over a medium heat, continually stirring, for 5-6 mins until creamy and thick. Add a splash more water if you prefer a thinner porridge.

Reserve one square of chocolate and finely chop the remaining. Stir the chopped chocolate through the porridge until melted and the oats are a deep chocolatey colour. Spoon into four bowls, and top with the toasted pistachios. Grate over the reserved chocolate and serve.