Spray a nonstick skillet with olive oil. Heat skillet over low heat. Add ham and cook until warm.
Spread one slice of bread with honey mustard and place in the skillet, spread side up. Add apple slices, ham, and cheese. Top with second slice of bread. Cook until bottom slice of bread is golden, then flip and continue to cook until cheese is melted and bread is toasted. Cut in half and serve immediately.
Keywords: hot ham and cheese sandwich, apple white cheddar sandwich