If using frozen beans, in a medium saucepan add enough water to cover bottom of pan. Add 2 tablespoons onion soup mx. Bring to a boil; add package of green beans. Stir and cover. Reduce heat to a low simmer and simmer gently for 7-9 minutes or until heated through.
If using canned green beans, pour enough liquid from the can/s to cover the bottom of the pan. Proceed as directed above, but drain the remaining green beans before adding.
When heated through, remove from heat, stir and serve. A sprinkling of grated Parmesan cheese may be added for garnish.