Creating the perfect Denver omelette is both an art and a science. Follow these step-by-step instructions to ensure success:

1. Prepare the Eggs:
   • In a bowl, beat the eggs thoroughly. Add a pinch of salt and pepper to enhance the flavor, then set the mixture aside.
2. Sauté the Vegetables:
   • Heat olive oil or butter in a non-stick skillet over medium heat.
   • Add the diced bell peppers, onions, and mushrooms (if using). Sauté for 3-4 minutes until they are softened and fragrant.
3. Cook the Eggs:
   • Pour the beaten eggs into the skillet, ensuring they cover the vegetables evenly.
   • Cook until the edges start to set, approximately 2-3 minutes.
4. Add the Cheese:
   • Sprinkle the shredded cheese over the eggs, allowing it to melt slightly.
5. Fold the Omelette:
   • Carefully fold the omelette in half using a spatula.
   • Cook for another 1-2 minutes until the cheese is fully melted and the eggs are cooked through.
6. Serve:
   • Slide the omelette onto a plate and serve immediately for best results. Enjoy your homemade Denver omelette!