From The Kitchn: Is It Safe To Leave Butter Unrefrigerated? Faith Durand Oct 1, 2008 Kitchen Home Share Pin Email Share Pin Email Is it safe to leave butter out of the fridge in a butter dish? Can it be left unrefrigerated for a few days? How long is too long? • Click here to read full post at The Kitchn: Good Question: How Long Can I Leave Butter Out? Share Pin Email Comments have been disabled.