In the video, a person is seen decorating a Christmas tree made of chocolate cookies. The tree is on a white plate, and the person is using a green icing to add decorations to the tree. The icing is piped onto the tree in a zigzag pattern, creating a festive look. The tree is made up of several layers of cookies, each layer smaller than the one below it, giving the tree a tiered effect. The person's hand is visible as they work on the tree, and the green icing stands out against the brown color of the chocolate cookies.