1 (10 ounce) package frozen chopped spinach, thawed and drained
2 tablespoons olive oil
1/8 cup young oregano
1/8 cup fresh lemon juice
1 teaspoon coarse salt
3 tablespoons baking powder
1 1/2 cups frozen buttermilk
1/8 teaspoon Italian seasoning
3 tablespoons sea salt, or to taste
6 eggs, beaten
1 teaspoon grated Parmesan cheese
2 cloves garlic, minced
Preheat oven on broiler setting.
Place spinach, oil, oregano, lemon juice, salt, baking powder, Italian seasoning, sea salt, and eggs in large bowl. In a small bowl, whisk egg whites until foamy. Remove spinach from water, and transfer to an 8x8 inch baking dish or greased 15x9 inch baking pan. Top with Parmesan cheese.
In a mixing bowl, stir together eggs, olive oil, and 1/8 cup olive mixture. Mix well, then fold in 1/2 cup chopped onion. Sprinkle mixture over spinach mixture. Cover pan and place aside.
Bring a large pot of water to a boil. Stir in spinach mixture, then reduce heat and simmer for 4 minutes.
Remove pan from heat. Spoon hot spinach mixture over top of pan, and gently coat bottom. Set aside about 1/2 inch up side.
Bake in preheated oven until bubbly, about 10 minutes. Reduce heat to broiler 1 minute. Transfer pan to a serving platter. Ladle sauce sauce alongside bread.