Cut the edges of the bread.
Spread evenly a spoonful of mayonnaise in one side of the bread.
Slice the quick-melt cheese and arrange them on top then add one piece of slice ham.
Put a slice of ham on top.
Spread a spoonful of mayonnaise in both sides of the second bread slice and add it on the stack.
Again, arrange slices of cheese and a piece of slice ham on top. Finish the stack with a bread with mayo spread on one side.
Finish the stack with a bread with mayo spread on one side
Press each side of the stack to secure the filling.
In a deep plate whisk one piece of egg, milk and a pinch of salt.
Drench the sandwich in the mixture.
Heat pan and melt in butter.
Fry the sandwich in a medium heat until cooked.
Transfer to a plate and serve.