Classic Green Bean Casserole Recipe

Green bean casserole is a Thanksgiving institution — and for good reason. Creamy, savory, and topped with crispy onions, it's the side dish half the table comes back for. Here's the classic version and a from-scratch upgrade that takes it over the top.

The Classic Version

Blanch one pound of green beans until tender-crisp, drain, and spread in a baking dish. Combine one can each of cream of mushroom soup and milk, stir in half the crispy fried onions, and toss with the beans. Bake at 350°F (175°C) for 25 minutes, top with the remaining onions, and bake 5 more minutes until golden. It's nostalgic for a reason.

From-Scratch Upgrade

For a homemade version, sauté sliced mushrooms in butter with garlic, make a quick roux, and whisk in stock and a splash of cream for your sauce. Fold in the blanched beans, top with fried shallots, and bake. The flavor is deeper — and it's easily adapted to a gluten-free or keto Thanksgiving menu.

Make-Ahead Tip

Green bean casserole is a strong make-ahead Thanksgiving side: assemble it a day ahead, refrigerate, and bake just before serving. It's also a reliable Thanksgiving potluck dish that travels well — bring it warm in a covered dish and add the onion topping on site.