01 -
In a large bowl, combine the ground beef, ketchup, Worcestershire sauce, onion powder, garlic powder, salt, smoked paprika, black pepper, and water. Mix thoroughly until well incorporated and set aside.
02 -
In a separate bowl, toss the diced potatoes, sliced carrots, olive oil, garlic powder, salt, and pepper until evenly coated.
03 -
Lay out six 18 x 12 inch sheets of heavy-duty aluminum foil and lightly spray each with nonstick cooking spray. Divide the vegetable mixture evenly among the foil sheets, placing each portion in the center.
04 -
Divide the meat mixture into six equal patties. Place one patty on top of the vegetables in each foil sheet. Distribute the onion slices evenly over each patty and top each with one tablespoon of butter.
05 -
Fold and crimp the edges of each foil sheet securely to create airtight packets that prevent steam from escaping during cooking.
06 -
Preheat the grill to medium-low heat around 400°F (204°C). Place the foil packets on the grill and close the lid. Cook for 30 to 40 minutes until the internal temperature of the patties reaches 160°F (71°C) and the vegetables are tender.
07 -
Carefully remove the packets from the grill using tongs or heat-resistant gloves. Open cautiously to avoid steam. Serve immediately.