Green bean casserole is a classic holiday dish that can be made in just a few minutes. Simply mix together canned cream of mushroom soup, milk, and soy sauce in a baking dish. Add canned or fresh green beans and top with French fried onions. Bake in the oven for 25-30 minutes until the onions are golden brown and the casserole is hot and bubbly. This dish is perfect for Thanksgiving or Christmas dinner.