01 - Preheat your oven to 375°F (190°C).
02 - Drizzle 1 tablespoon of olive oil into a medium baking dish or oven-safe skillet. Add spinach, cherry tomatoes, onion, and garlic. Season lightly with salt and pepper, and toss to combine evenly.
03 - Sprinkle crumbled feta evenly over the vegetable mixture. Drizzle the remaining olive oil and sprinkle dried oregano and chili flakes on top.
04 - Make four small wells in the mixture and carefully crack an egg into each well, ensuring yolks remain intact.
05 - Bake for 15–20 minutes, or until the egg whites are just set but yolks are still slightly runny.
06 - Remove from oven and let cool slightly before serving to allow the dish to set.