Prep Time: 5
Cook Time: None
Serves: Serves: 1
Preheat panini pan or heat gas grill to medium-low.
Combine mayonnaise and mustard; spread over one side of each slice of bread. Turn one slice over onto a sheet of waxed paper. Place one slice of cheese over bread; top with ham, tomato and remaining slice of cheese. Top with remaining slice of bread, mustard side up.
Cook sandwich in a preheated panini maker or on gas grill, about 4 to 5 minutes, turning once, until cheese is melted and bread is golden brown.*