Preheat the oven to 350°F. Remove the batter from the refrigerator and one pan from the freezer. Fill each well in the madeleine pan with 1 tablespoon of the batter. Remove the other pan and fill in the same way. Bake the madeleines. Place both pans on a baking sheet for easy handling and place in the oven.

https://www.thekitchn.com/how-to-make-classic-lemon-madeleines-cooking-lessons-from-the-kitchn-187109