The sundae .is an ice cream dessert. It typically consists of a scoop of ice cream topped with sauce or syrup, and in some cases other toppings including chopped nuts, sprinkles, whipped cream, or maraschino cherriesThe sundae .is an ice cream dessert. It typically consists of a scoop of ice cream topped with sauce or syrup, and in some cases other toppings including chopped nuts, sprinkles, whipped cream, or maraschino cherries