Nigella Lawson served up a delicious chocolate and peanut butter cake with a smooth peanut butter icing on Nigella’s Cook, Eat, Repeat.

The ingredients are: 200g unsalted butter, plus extra for greasing, 250ml hot water from a just-boiled kettle, 50g cocoa powder, 100g soft dark brown sugar, 125g caster sugar, 2 tsp vanilla extract, 225g plain flour, 1 tsp baking powder, ½ tsp bicarbonate of soda and 2 large free-range eggs, at room temperature.

For the icing: 600g icing sugar, 300g unsalted butter, softened, 400g smooth peanut butter (the regular kind, not a health-store variety), 2 tsp vanilla extract, ½ tsp fine sea salt, 120ml double cream and 30g dry roasted peanuts, chopped, to decorate.

See recipes by Nigella in her book titled : Cook, Eat, Repeat: Ingredients, recipes and stories. available from Amazon now.