INGREDIENTS
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1/3 cup (1 1/2 ounces) finely crumbled blue cheese
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1/3 cup fat-free sour cream
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2 tablespoons light mayonnaise
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2 tablespoons skim milk
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1/4 teaspoon Worcestershire sauce
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1 pound russet potato, thinly sliced (about 1 large), divided
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Cooking spray
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1/2 teaspoon salt, divided