"Quick Tip: To keep apple pieces from turning brown, place them in lemon juice and water for one minute after you cut them...."
INGREDIENTS
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4 6-ounce boneless, skinless chicken breast halves
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98% fat-free chicken broth to cover
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¼ cup nonfat mayonnaise
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¼ cup nonfat sour cream
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2 teaspoons grated orange zest
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3 tablespoons fresh orange juice
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1 medium Granny Smith apple, peeled, cored and diced
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2 ribs celery, cut into 1/4-inch dice
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12 slices artisan-style whole wheat bread, sliced thin (or French baguette or pita bread)
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6 Boston lettuce leaves
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salt and pepper, to taste