Crack four fresh eggs into a bowl, adding a pinch of salt. Whisk until silky smooth.

Place a non-stick skillet over medium heat for about two minutes. Add unsalted butter to coat the skillet.

Pour the whisked egg mixture into the skillet and cook for about 30 seconds until edges start to set.

Sprinkle your choice of cheese over half of the omelette, add optional fillings if desired, and let heat through.

Fold the omelette in half and cook for another 30 seconds until the cheese melts.

Gently slide the omelette onto a warm plate and enjoy!