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Preheat the oven to 400 F.
Place a 3-foot sheet of heavy-duty foil (18-inch wide foil) in a roasting pan or large, shallow baking dish.
Pat the chuck steak with paper towels to dry and place it in the center of the foil.
Spread the minced garlic and dry onion soup mix over the steak.
Cut the carrots in half lengthwise and then cut them into 3-inch to 4-inch lengths. Scatter them over the beef.
Peel the potatoes and cut them into 2-inch chunks. Or scrub baby potatoes. Arrange them over the beef and carrots.
Slice the celery (if using) into 3-inch to 4-inch lengths. Scatter the celery over the potatoes.
Cut the butter into small pieces and scatter over the vegetables.
Sprinkle with the kosher salt and pepper.
Wrap the foil around the steak and vegetables and fold the edges over to seal.
Bake for about 1 1/2 hours, or until the beef is very tender.