How Can I Stop Overbaking My Cookies for Perfect Soft Centers?

How Can I Stop Overbaking My Cookies for Perfect Soft Centers?

You slide a tray of cookies into the oven, set a timer for exactly the time the recipe says, and wait. When the buzzer goes off, they look perfect — golden brown all over. But after cooling, they turn into crunchy, dry discs. You wanted soft, chewy centers. What happened?