Steps
1. Heat the vegetable oil in a non-stick skillet over medium heat.
2. Add the chopped onions and sauté until they are caramelized and golden brown.
3. Meanwhile, beat the eggs in a bowl and season with salt and pepper.
4. Pour the beaten eggs into the skillet with the caramelized onions.
5. Cook the omelette for a few minutes, gently lifting the edges and tilting the pan to allow the uncooked eggs to flow underneath.
6. Drizzle the soy sauce over the omelette and continue cooking until the eggs are set.
7. Fold the omelette in half and transfer to a plate.
8. Serve hot and enjoy!