Prepare two slices of bread.
Cut ham, cheese, tomato, lettuce, and other ingredients into bite-sized pieces.
Melt some butter in a pan and lightly grill the ham.
Spread mayonnaise and mustard on one slice of bread.
Place ham, cheese, tomato, and lettuce on the bread.
Cover with the other slice of bread to form a sandwich.
Cut into bite-sized pieces and serve on a plate.