This green bean casserole is a popular recipe that is often served during the holiday season. It is made with fresh green beans, cream of mushroom soup, and crispy fried onions. The green beans are blanched until tender and then combined with the mushroom soup. The casserole is then topped with the crispy fried onions and baked until it is hot and bubbly. The combination of the tender green beans, the creamy mushroom soup, and the crispy fried onions creates a classic and comforting dish that is perfect for a Thanksgiving or Christmas dinner. Serve it as a side dish alongside roasted turkey or ham, or enjoy it as a vegetarian main course.