Peanut Butter Cookie

Peanut butter cookie consists of hand-rolled dough that is then flattened with fork tins, giving the cookies their characteristical waffle pattern. It is believed that the dough is marked to help cookies bake more evenly, but some claim it can also be a warning sign to people with peanut allergies. The dough usually consists of butter, peanut butter, eggs, milk, flour, sugar, and salt. Today, the cookies are so popular that there is even a National Peanut Butter Cookie Day, celebrated on June 12.