Chocolate Chip Cookie

The chocolate chip cookie was invented in the 1930s by Ruth Graves Wakefield at the Toll House Inn in Whitman, Massachusetts. She originally chopped up a semi-sweet Nestlé chocolate bar and added it to her butter drop cookie dough. She eventually sold the recipe rights to Nestlé in exchange for a lifetime supply of chocolate.

Chilling the dough for at least 24 hours allows the flour to fully absorb the moisture from the eggs and butter. This resting period results in a thicker cookie with a much deeper caramelized flavor. It also prevents the cookies from spreading too flat and burning on the baking sheet during the cooking process.

For a softer, chewier texture, recipes often use a higher ratio of brown sugar to white granulated sugar. Brown sugar contains molasses, which adds moisture and an acidic component that reacts with baking soda. This reaction helps the cookies puff up in the oven and retain their chewiness long after they cool.

Most recipes recommend baking chocolate chip cookies at 350 degrees Fahrenheit (175 degrees Celsius). This moderate temperature allows the butter to melt and spread the dough before the structure sets from the eggs and flour. Baking at this temperature ensures the edges get crispy while the center remains soft and gooey.