My grandmas and aunts always made a variety of holiday cookies, with different flavors, textures, and levels of appeal. Instead, they used carefully controlled batches of cookie dough and baked them at three different temperatures: 365 degrees, 401 degrees, and 437 degrees Fahrenheit. View this post on Instagram A post shared by Ashley | Girl That Cakes (@girlthatcakes)At 365 degrees, things happened much more slowly. According to the researchers, 401 degrees Fahrenheit appeared to provide a nice middle ground. The researchers weren't saying that 401 degrees is the one perfect temperature for every cookie ever made.