INGREDIENTS
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1 Sheet Puff Pastry, room temperature
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3 Tablespoons unsalted butter
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5 Tablespoons all-purpose flour
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1 small onion, minced
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1 clove of garlic, minced
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½ Cup celery, chopped
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½ Cup carrots, diced
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½ Cup peas
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1½ Cup chicken broth
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½ Cup milk
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2 Cups chicken, cooked and diced
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1 Egg
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1Tablespoon water