Spinach Strata

Directions

1. 1
   Rub a splash of olive oil in a 9-inch square baking dish (or equivalent).
2. 2
   Alternatively, line the pan with parchment paper.
3. 3
   Sprinkle the baking dish or parchment paper with lemon zest and set aside.
4. 4
   In a medium bowl, whisk the olive oil, mustard, salt, and pepper with a splash of the milk.
5. 5
   Whisk in the rest of the milk and the eggs, beating it well.
6. 6
   Put the bread in a large bowl and add the spinach and half of the feta.
7. 7
   Toss it all together with your hands, then transfer to the prepared baking dish (you can also do the mixing directly in the baking dish if it is large enough).Very slowly drizzle the egg mixture over the bread and sprinkle the remaining feta over the top.
8. 8
   Cover and refrigerate overnight.
9. 9
   The next morning bake the strata, uncovered,on a rack in the top third of a preheated 350 degree oven for 45 to 55 minutes, until the egg is set in the middle and the edges are browned.
10. 10
    You can brown the top a bit more under the broiler if you like, if you have not used the parchment paper.
11. 11
    Serve warm, drizzled with a bit of olive oil and sprinkled with the fresh oregano.