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Ultimate Green Bean Casserole: A Rich, Creamy Classic for Every Gathering


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  • Author: Ava Parker
  • Total Time: 50 mins
  • Yield: 8 servings
  • Diet: Vegetarian

Description

Ultimate Green Bean Casserole is a rich, creamy, and savory holiday classic made with tender green beans, a velvety mushroom sauce, and crispy fried onions baked to golden perfection. It’s the perfect crowd-pleasing side dish for Thanksgiving, Christmas, or any cozy family meal.


Ingredients

  • 1 1/2 pounds fresh green beans, trimmed and cut into 1-inch pieces
  • 2 tablespoons butter
  • 1 tablespoon olive oil
  • 1 medium onion, finely diced
  • 8 oz mushrooms, sliced
  • 3 cloves garlic, minced
  • 2 tablespoons all-purpose flour
  • 1 cup chicken or vegetable broth
  • 1 cup heavy cream or half-and-half
  • 1 teaspoon soy sauce
  • 1/2 teaspoon black pepper
  • 1/2 teaspoon salt
  • 1/4 teaspoon paprika
  • 1 1/2 cups crispy fried onions (divided)


Instructions

  1. Preheat oven to 375°F (190°C).
  2. Bring a pot of salted water to a boil. Add green beans and blanch for 4–5 minutes until bright green and crisp-tender. Drain and rinse with cold water to stop cooking.
  3. In a large skillet, heat butter and olive oil over medium heat. Add onions and mushrooms; cook for 6–8 minutes until softened and lightly browned.
  4. Add garlic and cook for 1 minute until fragrant.
  5. Sprinkle flour over the mixture, stirring until fully absorbed.
  6. Slowly pour in broth and heavy cream while stirring. Add soy sauce, salt, pepper, and paprika. Simmer for 3–4 minutes until thickened.
  7. Remove from heat and stir in the blanched green beans and 1/2 cup of the fried onions.
  8. Transfer mixture to a 9×13-inch baking dish and spread evenly.
  9. Top with the remaining fried onions.
  10. Bake for 20–25 minutes until bubbly and golden on top.

Notes

  • Use fresh green beans for best texture, but frozen beans work well too.
  • Add a splash of white wine to the mushroom sauce for extra depth.
  • Make ahead by preparing the casserole without the topping; refrigerate up to 24 hours, then bake with fresh fried onions.
  • For a richer flavor, replace half the mushrooms with caramelized onions.
  • Prep Time: 15 mins
  • Cook Time: 35 mins
  • Category: Side Dish
  • Method: Baked
  • Cuisine: American