We had these for lunch today and my DH said they were superb!
Easy recipe to follow. I only made half quantity - 6 pies. I did cook them for longer than 20 minutes, as some of my egg white was still runny. I can't stand runny egg white, so I cooked them until the white was solid (then the yolk was over cooked). It didn't matter about the yolks, they were still yummy.
Linked - JD