Ingredients For the shortbread 175g/6oz unsalted butter 75g/2½ oz caster sugar 1 vanilla pod, split and seeds scraped out 225g/8oz plain flour For the caramel 200g/7oz unsalted butter 1 x 397g/14oz can condensed milk 4 tbsp golden syrup 1 tsp sea salt For the topping 350g/12oz milk chocolate Preparation method Preheat the oven to 180C/350F/Gas 4. Grease and line a 20cm/8in square cake tin. Rub the butter, sugar, vanilla seeds and flour together in a bowl to make rough dough. Press the dough into the cake tin and prick all over with a fork. Bake the dough in the oven for five minutes, then reduce the oven to 150C/300F/Gas 2 and bake for a further 35 minutes. Once cooked, allow to cool in the tin. Meanwhile for the caramel, place all the ingredients in a saucepan and bring to the boil for 10 minutes Pour the caramel mixture over the shortbread. Chill in the fridge until the caramel has cooled and hardened slightly. For the topping, melt the chocolate in a bowl set over a pan of simmering water. Once melted, pour the chocolate over the caramel. Chill in the fridge again until the chocolate has set, then cut into 9 squares.