INGREDIENTS
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•2 tablespoons olive oil
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•1 1/2 pounds cremini or button mushrooms, halved (or quartered, in large)
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•4 carrots, chopped
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•3 celery stalks, chopped
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•1 medium onion, chopped
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•1/2 tablespoon fresh thyme
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•1/3 cup all-purpose flour, plus extra for floured surface
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•1 cup vegetable broth
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•1/2 cup peas
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•1 sheet puff pastry, thawed
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•1 egg
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•1/2 teaspoon salt
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•1/4 teaspoon pepper