Potatoes, peeled and cut up
1 thick slice of an onion
1 tablespoon butter
salt and pepper
Montreal Steak Seasoning
Spray a large piece of heavy-duty aluminum foil with non-stick cooking spray. (Use foil 3 times the width of the food.) Place potatoes, carrots, and onion on tin foil. Salt and pepper them. Place butter on top. Place hamburger patty on top. Sprinkle with Montreal Steak Seasoning.
Fold sides up creasing foil at edge of food. Keeping edges together make a 1/2" - 1" fold and crease. Fold 2 - 3 times - leaving enough room in packet for food expansion and steaming during cooking. Smooth ends flat, make four small triangle folds on each end from the edge of food to the edge of foil. Fold ends of foil in using 1/2" folds.
If not using heavy-duty foil, wrap dinner again with another piece of aluminum foil.
Bake in oven at 350º for 1 hour. You may also cook this in hot coals, for about 1 hour, turning every 15 minutes.