Graham crackers are a type of sweet, crisp cookie made from graham flour, which is a whole wheat flour. They were invented in the early 19th century by a Presbyterian minister named Sylvester Graham, who believed in a healthy diet. These crackers are often used in desserts, such as s'mores, where they are paired with chocolate and marshmallows. Typically rectangular in shape, graham crackers have a slightly honeyed flavor and a crunchy texture. They are commonly found in grocery stores and can be enjoyed on their own or as an ingredient in various recipes, including crusts for pies and cheesecakes.