Steps
1. Heat olive oil in a non-stick skillet over medium heat.
2. Add chopped spinach and sauté until wilted.
3. In a bowl, whisk eggs with salt and pepper.
4. Pour the eggs into the skillet, swirling to spread evenly.
5. Cook until the edges set, then sprinkle feta cheese over one half of the omelette.
6. Fold the omelette in half and cook for another minute until the cheese melts.
7. Slide onto a plate and serve hot.