INGREDIENTS
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1 egg
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1 tbsp. water
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4 skinless, boneless chicken breast halves (about 1 1/4 pounds)
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1/2 tsp. dried thyme leaves, crushed
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1/8 tsp. ground black pepper
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2 tbsp. butter
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2 1/4 oz. sliced mushrooms, sliced (about 3/4 cup)
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1 medium onion, finely chopped (about 1/2 cup)
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1 tbsp. chopped fresh parsley
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1/3 of an 8-ounce package cream cheese, softened
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1 tbsp. Dijon-style mustard
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All-purpose flour
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1/2 of a 17.3-ounce package Pepperidge Farm® Puff Pastry Sheets (1 sheet), thawed