Creating the Easy Feta and Spinach Casserole is straightforward, and if you follow these steps, you’ll have a delicious meal ready in no time:

1. Preheat the Oven: Start by preheating your oven to 350°F (175°C) and grease a baking dish (about 9×9 inches) with olive oil.
2. Sauté the Onion and Garlic: In a skillet, heat the olive oil over medium heat. Add the chopped onion and sauté until translucent, about 5 minutes. Add the minced garlic and cook for another minute until fragrant.
3. Prepare the Spinach: Add the chopped spinach to the skillet and sauté until wilted, about 2-3 minutes. Remove from heat and let it cool slightly.
4. Mix the Ingredients: In a large bowl, whisk together the eggs and milk. Stir in the breadcrumbs, oregano, salt, and pepper. Then, add the sautéed spinach mixture and crumbled feta cheese to the bowl. Mix until well combined.
5. Transfer to Baking Dish: Pour the mixture into the prepared baking dish, spreading it out evenly. If desired, sprinkle grated parmesan cheese on top for an extra cheesy finish.
6. Bake: Place the casserole in the oven and bake for 30-35 minutes, or until the top is golden brown and set in the center.
7. Cool and Serve: Once done, remove the casserole from the oven and let it cool for about 5-10 minutes before slicing.

These easy steps will lead you to a delicious Easy Feta and Spinach Casserole that everyone will love!