1Crack the 4 eggs into a bowl and beat them well with a fork or whisk.
Add 1 teaspoon of salt to the eggs and mix thoroughly.
Slice the 2 medium tomatoes into thin slices.
Heat 2 tablespoons of butter in a non-stick frying pan over medium heat.
Once the butter is melted and slightly bubbling, pour the beaten eggs into the pan.
Allow the eggs to cook for about 2 minutes, or until they start to set around the edges.
Place the 4 slices of cheese evenly over the eggs.
Arrange the tomato slices on top of the cheese.
Cook for another 2-3 minutes, or until the cheese is melted and the eggs are fully set.
Carefully fold the omelette in half using a spatula.
Slide the omelette onto a plate and serve immediately.