Eggplant Turnovers (Empanadas de Berenjenas)

I'm still playing with Gil Marks' Olive Trees and Honey and got a bit excited by the section on savory turnovers.  Yes, a section on turnovers!!!  You may be laughing at this point, but if you are then that means you have never had a pasty or an empanada!  I've always hated the phrase, "you don't know what you are missing" because it seems pretty redundant. If you've never had a savory turnover, you've never enjoyed this neat and portable meal that can be eaten hot or cold and one-handed too!