Most cookies have top crusts that remain relatively soft and flexible as the cookies set during baking. However, if the top surface dries out before the cookie is finished spreading and rising, it hardens, cracks, and pulls apart, producing an attractive crinkly, cracked exterior. Using this science and the right kinds of sugar, helped us create a foolproof crinkle cookie. Tap the link in our profile to sign up for a free trial and access the recipe. #cooksillustrated #chocolatecrinklecookies #cookies #chocolatecookies #christmascookies #crinklecookies #cookiebaking #holidaybaking #christmasbaking #baking #chocolate #foodscience