
Butter all 4 slices of bread on one side.

On the unbuttered side of the slice, layer the cheese, ham, onion, tomato and more cheese. Cover the filling with a slice of bread (buttered side out). Do the same for the second sandwich.

Fry the formed sandwiches in a frying pan over medium heat for 1-2 minutes on each side. The oil will give the bread an appetizing golden hue.