A very simple, tasty, CRUSTLESS tart to throw together in minutes! This, to me, is so typical of the wonderfully casual way in which Mediterranean French dishes are made, quickly, fresh, and no-nonsense. I used a pillow pack of pre-washed baby spinach. If you need to wash it, dry in a salad spinner or dry well with paper towels, or you might have too much liquid. This is the very simplest of rustic dishes, requiring not much in the way of seasoning. Add garlic if you wish. Do not add salt if using a salty feta! Very nice with any meat main dish. DO NOT use swiss chard for this recipe: I've tried it, and swiss chard dries out on top, while real spinach does not. Please see other suggestions in the directions!