Place the bread on a flat surface and butter one side of each slice. Flip the bread over and place one slice of cheese on each unbuttered side. Add the ham and close the sandwich with the buttered sides facing out.
Grill
Heat a skillet over medium heat. Grill the sandwich for 2 to 3 minutes, until golden. Flip and cook for another 1 to 2 minutes, until the bread is crispy and the cheese has melted.
Pack for Lunch
Serve immediately or let the sandwich cool completely before packing it inside a sturdy lunch container. Keep fruit, veggies, and other moist sides in separate compartments. Refrigerate until ready to place inside an insulated lunch bag with an ice pack, if needed.
Notes
Let the sandwich cool completely before packing it. This allows the steam to escape instead of getting trapped inside the lunch container and softening the bread.