Baker's Tip #77: Wanna level up your cookie game? Chill your dough. Seriously…. 1. Flavor Development : Let that dough sit and the flour hydrates while the sugar breaks down into glucose and creates that sweet caramelized goodness. 2. Thicker, better cookies: Cold butter = less spreading, which means those perfect chunky cookies. 3. Crispy edges, gooey middle: The dream combo, all thanks to a little fridge time. Trust me—give your dough a nap in the fridge, and thank me later!