If you're having trouble getting your madeleines to rise properly, there's a few things you can troubleshoot! 1. Make sure your baking powder is fresh! If it's not, your madeleines won't rise properly. 2. Make sure you beat the eggs and sugar together for the full time. This incorporates air into the batter which helps the batter rise. 3. If you're only chilling the batter for a couple hours, try chilling for 24 hours before baking. 4. While the oven is preheating, chill the madeleine pan in the fridge for 30 minutes. But even if your madeleines don't get the hump on the back, I promise they'll still be delicious!