Slice onion and green peppers. (I do this at home before our camping trip and store in a ziplock bag.

Heat oil in a skillet over the fire.

Once oil is hot, add in onions and cook for 5 minutes or until they begin to brown.

Add the peppers to the onions and continue to cook until they are soft and tender.

Place open garlic bread on aluminum foil and layer with roast beef.

Once onions and peppers are cooked, add on top of roast beef.

Add all six slices of cheese on top of onions and peppers.

Put the top slice of garlic bread on sandwich and cover in two layers of foil.

Place over the fire, or near coals, and cook for approximately 10 minutes, or until the cheese is melted.

Slice into four pieces and eat hot!