watery eggs and spanakoita

You mention water build up, are you using any type cheese? Are you positive as to internal temp and oven temp. If not hot enough egg won't set and be able to hold any moisture or excess liquid.

I was thinking of it too. Maybe the eggs sometime affect moisture of appearance of the food. In my experience, sometime I do bought 

eggs that are watery inside. :)

We had issues with watery eggs, assumed they were old and complained to the supplier, were assured they were not. They had already contacted the producers and were told it was an humidity issue related to particular weather conditions and the eggs were absorbing the extra water. This was 1 box out of the blue with nothing special about the weather so....hmmmnn.

Try using the float method to test the freshess of your egg...if it sinks and lies on its side its fresh (small air space). Then crack the egg...if the white is viscous as it should be but there is runoff then there's the extra water as above and I was wrong to doubt the nervous, long-winded explanation I got.

Maybe the fetta is wetter (rhyme intended :)  ) than what you normally get.  Your supplier may have changed their source and this is causing the difference..  Could try putting it over a sieve to drain for a bit or squeezing thru a clean teatowel till any excess moisture seems to have gone.

Are you chilling the finished product for long enough before you are cooking?  If it's really hot and humid this could mean it might take longer cooking to dry it....Just a thought.

But as you said, you're noticing it in the mixing stage, so its either the fetta or the eggs.

More often than not it's the spinach.  I like to cook my spinach the day before if I have the opportunity and then let it drain over night in the fridge.  Then I pat it dry between 2 kitchen towels before proceeding.  Some greek cooks (though not myself) like to make very substantial spinach pies that are 2-3 inches tall.  In this case they add a half a cup of raw rice to the mixture and that absorbs excess moisture.

thanks a lot for sharing this delicious recipe!! :)