Yea I'd just heat it up on a low temp until it liquifys completely, stirring often. Once you have it all liquified set it out until the temp drops low enough to touch but still in liquid state (Between 76F-120F). Then place it in the fridge for a few hours to insure that all oils have solidified properly. The idea is to have it solidify slowly and allow all the oil to bond back together. I'm curious though how you had it sitting to long. More details would be helpful.