Steps
1. In a bowl, whisk together the eggs, milk, salt, and pepper until well combined.
2. Heat olive oil in a non-stick skillet over medium heat.
3. Add the chopped spinach and sauté for about 1-2 minutes until wilted.
4. Pour the egg mixture over the spinach, tilting the pan to spread it evenly.
5. Cook for 2-3 minutes until the edges start to set, then sprinkle feta cheese on top.
6. Carefully fold the omelette in half and cook for another minute until fully set.
7. Slide the omelette onto a plate and serve hot.