4 (1-ounce) slices white bread
2 teaspoons Dijon mustard
3 ounces (1/4 inch-thick) sliced deli turkey
2 ounces reduced-fat Swiss cheese or Jarlsberg cheese, thinly sliced
1 medium tomato, thinly sliced
1/8 teaspoon freshly ground black pepper
1 large egg
1 large egg white
1 tablespoon 1% low-fat milk
1 1/2 tablespoons chopped fresh basil
1/2 teaspoon butter
1. Spread 1 side of each bread slice with 1/2 teaspoon mustard. Divide turkey, Swiss cheese, and tomato slices evenly between 2 slices of coated bread. Sprinkle with pepper and top with remaining 2 bread slices, mustard side down.
2. Combine egg, egg white, milk, and chopped basil in a shallow dish; stir well with a whisk.
3. Coat a large nonstick skillet with cooking spray and place over medium heat until hot. Add 1/2 teaspoon butter. Dip both sides of each sandwich into egg mixture and place in pan. Cook 3 to 4 minutes on each side or until cheese melts and sandwiches are golden.
4. Cut sandwiches diagonally in half, and serve immediately.