I found this recipe in You Mag. They are friands although I don't have a special friand tin so baked mine in a normal muffin tin. Friands are little French tea cakes similar to the rectangular Financiers (Bars of Gold). These ones have rhubarb in although I reckon you could put loads of different types of fruit in instead. Maybe blueberries or fig? I just had mine with a cup of tea but would be great with ice cream as a pudding.
The recipe can be found here on the Daily Mail website.