Can gravy that was made from gravy mix sit out overnight and still be good next day?

No, gravy made from gravy mix should not be left out overnight. Perishable foods, including gravy, should be refrigerated within two hours of cooking to prevent bacterial growth. If gravy has been left out at room temperature for more than two hours, it is best to discard it to avoid foodborne illness. Always prioritize food safety to prevent health risks.