Are you responsible for dessert and need to know how many cookies to make for an event? Perhaps you're having a cookie table or cookie bar at your wedding reception or family reunion? Because of their small size, guests like to nibble on cookies much like they do appetizers. Plus, they always like to take a few with them on their way out. The general rule of thumb is to have between 3-6 cookies available per person, which will vary depending on whether there will be other desserts and appetizers.