Heat the oven to 170°C (fan). Line a 20cm square tin with greaseproof/ baking paper.

To a large mixing bowl add the butter and chocolate and slowly heat on a bain-Marie (put the bowl on top of a small saucepan filled with an inch of water and let the water simmer on the stove). Keep stirring the chocolate mixture until it has fully melted.

Now add the flour, sugar, eggs, salt and baking powder and mix until fully combined.

Pour into your lined square tin and smooth out to the edges. At this point you can add whatever toppings you’d like.

Pop the brownies into the oven for 18-22 minutes. (18 mins if you like them fudgy).