Preheat oven to 400℉ or heat up grill or campfire.

Lay out 4 (12-inch) square pieces of oil.

Divide and layer onions, potatoes, chicken, mushrooms, and green beans evenly on each piece of foil.

Drizzle with evoo, sprinkle with Montreal steak seasoning and give it a gentle stir.

Wrap up the foil into a pouch by bringing up two sides and then the other sides and then folding them in.

Place on grill and cook for 30 minutes. Serve straight out of the pouch, but you might want to put it n a plate to avoid any mess.