Dessert knife is typically used to cut cakes, pies, and other sweet treats. However, there are synonyms that can be used to describe this type of knife. Some people refer to it as a pastry knife or a cake knife. Others may simply call it a dessert slicer or a sweet knife. The term pie server is also used, especially when referring to a flat blade with a serrated edge, designed to help slide slices of pie off a dish. Whatever you choose to call this useful kitchen tool, it's an essential item for anyone who loves to bake or enjoy dessert.