The recipe can be found at:
http://www.kingarthurflour.com/recipes/lemon-pudding-cakes-recipeContrary to what the name might imply, these little cakes do not have pudding in them. You actually make a cake batter, then pour a "sauce" over it before it bakes. When it is done the cake is on top and a pudding has formed on the bottom.
We did change the recipe a bit, as we didn't have lemon powder or lemon bits. Instead we put lemon zest(peel) and lemon juice(2 tbls) in the cake batter and 3 tbls of lemon juice in the sauce.
So Yummy! And very English. I have an English cookbook and there is a whole chapter on "puddings". Did you know pudding is slang for dessert in England?
Aren't they cute? In vintage Fire King custard cups.