Steps
1. In a bowl, whisk the eggs until well combined. Add a pinch of salt and pepper.
2. Heat the olive oil in a non-stick skillet over medium heat.
3. Add the bell peppers and mushrooms to the skillet, sautéing for about 2-3 minutes until softened.
4. Stir in the spinach and cook for another minute until wilted.
5. Pour the whisked eggs over the vegetables in the skillet, tilting the pan to spread them evenly.
6. Cook for about 3-4 minutes until the edges start to set. Sprinkle the feta cheese on one half of the omelette.
7. Carefully fold the omelette in half and cook for an additional 1-2 minutes until fully set.
8. Slide onto a plate and serve warm.