Prepare two slices of bread.
Beat the eggs and add a pinch of salt, mixing well.
Melt butter in a pan and scramble the eggs.
Spread mayonnaise on one side of the bread.
Place the scrambled eggs and cheese on top of the bread.
Cover with the other slice of bread.
Add a bit more butter to the pan and toast the sandwich on both sides until golden.
Cut in half and serve on a plate.