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The BEST Classic Green Bean Casserole for Your Holiday Table

Close-up of a creamy green bean casserole topped with golden, crispy fried onions.

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Make this classic, creamy green bean casserole using simple ingredients. It is an easy, crowd-pleasing side dish perfect for Thanksgiving, Christmas, or any family gathering.

Ingredients

Scale
  • 2 (14.5 ounce) cans cut green beans, drained
  • 1 (10.5 ounce) can condensed cream of mushroom soup
  • 1/2 cup milk
  • 1 teaspoon soy sauce
  • 1/4 teaspoon black pepper
  • 1 1/3 cups crispy fried onions, divided

Instructions

  1. Preheat your oven to 350 degrees Fahrenheit. Lightly grease a 1.5-quart casserole dish.
  2. In a large bowl, combine the drained green beans, cream of mushroom soup, milk, soy sauce, and black pepper. Mix until everything is well combined.
  3. Stir in 1 cup of the crispy fried onions into the green bean mixture.
  4. Spread the mixture evenly into your prepared casserole dish.
  5. Bake for 25 minutes.
  6. Remove the casserole from the oven and sprinkle the remaining 1/3 cup of crispy fried onions over the top.
  7. Return the casserole to the oven and bake for an additional 5 minutes, or until the topping is golden brown and the casserole is heated through.
  8. Let the casserole stand for 5 minutes before serving.

Notes

  • You can make this simple baked side dish ahead of time. Assemble the casserole (without the topping) up to 24 hours in advance. Cover and refrigerate. Add the topping and bake as directed, adding 10-15 minutes to the initial baking time if baking straight from the refrigerator.
  • For a Southern green bean casserole variation, stir in 1/2 cup of shredded cheddar cheese with the soup mixture.
  • If you want to make green bean casserole from scratch and skip the canned soup, you can make a homemade mushroom sauce base.

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