150驳/5陆辞锄 plain flour
2 tsp baking powder
1 tsp bicarbonate of soda
200g/7oz soft dried pitted dates, roughly chopped
50g/1戮oz dark muscovado sugar
300g/10陆oz dark muscovado sugar
2 tbsp black treacle
1 tbsp black treacle
75g/2陆oz unsalted butter, softened, plus more for greasing
150驳/5陆辞锄 unsalted butter, softened
200ml/7fl oz double cream, plus more to serve
2 large free-range eggs, at room temperature