Prepare a clean grill for cooking on medium heat. Lay out one piece of foil about 12” x 24” and put the green beans in the middle of the foil, evenly spread out. Fold up ends of green beans to make a edge to contain water and olive oil. Sprinkle the seasonings over the beans, then drizzle with olive oil and water. Fold the ends of the foil in towards each other to form a packet. Wrap another time with foil to double layer the foil to prevent foil from tearing open.
Place foil packet on grill over direct medium heat. Cook with lid closed for 10 minutes. Flip the foil packet over and cook an additional 5 minutes. Carefully open the bag and check a bean from the middle of the pile to test if it’s done.
