2 slices whole wheat bread, toasted
2 tsp. whole grain mustard
2 slices Jarlsberg or Swiss cheese
2 thin slices red onions
1 plum tomato, sliced

Grilled cheese, grown up. Because they're broiled, they save calories. Spread toast with mustard. Top with cheese, onion, and tomato. Broil in toaster oven until cheese is melted, about 5 minutes.