Cheesecake must be refrigerated because it contains ingredients that spoil rapidly such as eggs and cream cheese. Cheesecake often contains other dairy products such as sour cream or milk, which also spoil when not properly stored. Always place cheesecake back in the refrigerator after it is served.
Typically, a freshly made or packaged cheesecake lasts for six to seven days in the refrigerator. However, cheesecake can last for as long as seven months in the freezer. Cheesecake needs to be properly covered when placed in the refrigerator because moisture and other contaminants can significantly shorten the shelf life of the cake.