Thinly slice the cucumbers diagonally and keep aside. Wash and pat the lettuce leaves dry. There should be no traces of water

Apply half a tablespoon of mayonnaise on each slice of bread, then place two lettuce leaves followed by the cucumber slices

Place the slice of ham and a slice of the cheese on top of it and cover with the remaining slice of bread

Trim off the browned edges of the bread if desired. Slice the sandwich diagonally into half and serve