1Crack the 4 eggs into a bowl and whisk them until well combined.
Heat 1 tablespoon of butter in a non-stick skillet over medium heat.
Pour the whisked eggs into the skillet and let them cook for a minute or until they start to set.
Place the 4 slices of ham and 4 slices of cheese evenly over one half of the omelette.
Use a spatula to fold the other half of the omelette over the ham and cheese.
Cook for another 2-3 minutes or until the cheese is melted and the eggs are fully cooked.
Slide the omelette onto a plate and serve hot.