Thanks to my lovely sister, I now have madeleine pans.
I tested them out using Cook’s Illustrated recipe (http://www.cooksillustrated.com/recipe.asp?recipeids=1482). I made one batch of vanilla and one batch of chocolate.
The chocolate ones came out a bit better due to some human-error issues with the first batch. I felt like they were a little more dense than I would have liked, so I might try out a different recipe next time. But they did get very good reviews at book club.
Ideas to try:
