A rolled ice cream machine works by using a freezing pan to quickly freeze a liquid ice cream base. The base is poured onto the freezing pan and mixed with toppings and flavors before being chopped and spread thinly. The ice cream is then rolled up using a spatula or scraper and placed upright in a cup or bowl. Additional toppings can be added before serving. This unique process creates delicious and visually appealing ice cream rolls that are a popular treat for many.