In a bowl, whisk together eggs, feta, spinach, red onion, black pepper, and parsley.
Heat olive oil in a 9-inch oven-safe skillet over medium heat. Pour egg mixture into the skillet and cook until eggs are set on the bottom, about 5 minutes.
Transfer skillet to preheated oven and bake until eggs are completely set, about 15 minutes.
Cut into wedges and serve warm.
Interesting Facts
This dish is a popular breakfast option in Greece and is often served with a side of Greek yogurt.
Feta cheese is a traditional ingredient in Greek cuisine.
Spinach is an excellent source of vitamins and minerals.