In a skillet add the green beans, mushrooms, cream of mushroom soup, and 1/2 a can of milk. Tip: If you aren’t in a position to take milk camping you can substitute it with the fluid in the green bean can.
Simmer the skillet contents until well combined.
Sprinkle with the fried onions just before serving. If you add the fried onions too soon they will go soggy.