250g/9oz plain flour
1 tbsp baking powder
250g/9oz caster sugar
320驳/11陆辞锄 icing sugar
pinch salt
1 tsp vanilla bean paste
100g/3陆oz unsalted butter, softened
200g/7oz unsalted butter, softened
2 large free-range eggs
240ml/8戮fl oz milk, at room temperature