Cannonball cookies are a type of dessert that combines the flavors of chocolate chip cookies and brownie batter. They are typically made by mixing cookie dough with chunks of chocolate and sometimes nuts, then rolling the mixture into balls before baking. The result is a soft, chewy cookie with a rich, fudgy center. These cookies are often enjoyed as a treat at parties or gatherings and can be customized with various add-ins like M&Ms or peanut butter chips. Their unique texture and flavor make them a favorite among cookie lovers, appealing to those who enjoy both cookies and brownies.