Preheat the oven to 180°C. Sieve all the dry ingredients together. Gently warm the brown sugar with the cubed butter and treacle. Add milk. Allow to cool a little and stir into the dry ingredients.

Note: "When my friend Steven Brown asked me to design a dessert program for his now-famous Tilia restaurant, he had two requests: There had to be a butterscotch pudding and a sticky toffee-date cake," ...