Preheat the oven to 180°C. Grease a 25-centimetre x 30-centimetre roasting tray and line with a sheet of damp greaseproof paper. In a food processor, blitz 250 grams each of butter and icing sugar, ...

Jamie Oliver has a vast selection of recipes that are straightforward, speedy, and require few ingredients — his mug cake recipe is no exception. Mug cakes are just as they sound: a simple cake batter ...