You can add some chocolate chips or raspberries for a bit of variety but these taste lovely on their own, with a cup of black coffee. If you use a flexible silicone mould, no need to butter it.
I made these this afternoon. My Madeline trau only makes 9 small cakes so I made them in batches. Very nice, I added a teaspoon of vanilla and dusted them with vanilla sugar. - 25 Oct 2011