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In a large bowl, combine ground beef, mayo, Worcestershire sauce, and minced onions and well combined
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Form into 6 patties
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Clean and cut potatoes, carrots, and onion and add to a large bowl
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Drizzle with half of the oil and sprinkle with half of the Italian seasoning, stir
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Drizzle with remaining oil and sprinkle remaining seasoning, stir
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Divide vegetables into 6 packets and place hamburger patty on top of vegetables
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Fold foil over and seal packet
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Heat grill to medium heat or 325 degrees F
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Place packets on the grill and cook for 20-25 minutes turning and slightly shaking packet often to prevent burning
- Remove when vegetables are tender and hamburger is 150 degrees F for medium-well done
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Serve immediately
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Store leftovers in the refrigerator