Kitchen Tip: Batter will keep well up to 3 days. It’s best to bake madeleines just before serving.
Kitchen Tip: Baking cooking spray is a combination of oil and flour that gets into all the nooks and crannies of madeleine pans. Brands like Pam and Bakers Choice carry them.
Shopping Tip: A madeleine pan, sold at cookware stores, has scallop- or shell-shaped indentations.