There's nothing more deflating—literally—than pulling a tray of cookies out of the oven and seeing pancake-like puddles where thick, chewy rounds should be. We spoke to baking expert and cookbook ...

You pull a tray out of the oven, excited to see gooey chocolate chip cookies—and instead, you’re met with a batch of sad, flat puddles. Ugh. We’ve all been there. So what went wrong? Here are seven ...

If you've ever wondered, "Why are my cookies flat?" then these tips from our Test Kitchen will help you improve your cookie-baking game.