INGREDIENTS
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1 tablespoon olive oil
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1/2 poundsweet Italian sausage links, casings removed
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2 small zucchini (about 1 pound), sliced
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kosher salt and black pepper
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1sheet puff pastry (half a 17.3-ounce package), thawed
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3 tablespoons Dijon mustard
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green salad, for serving