Authentic Sticky Toffee Pudding Recipe

I am looking for an authentic british sticky toffee pudding recipe. I have looked online and found many similarities. Soaked dates, eggs flour, sugar. I have found that many people prefer using brown sugar or muscavado sugar (which must be more popular in europe). Then they all have a sort of carmel sauce. The puddings are baked and the sauce is sometimes poured over to let it soak in, and then a little more added to the plate when served. Do you use a water bath?