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Creamy Classic Green Bean Casserole Recipe with Crispy Fried Onions

creamy classic green bean casserole - featured image

A creamy and comforting green bean casserole topped with crispy fried onions, perfect for holidays and easy weeknight dinners.

Ingredients

Scale
  • 1 pound fresh green beans, trimmed and halved
  • 3 tablespoons unsalted butter
  • 8 ounces cremini or white mushrooms, sliced
  • 1 small yellow onion, finely chopped
  • 2 cloves garlic, minced
  • 3 tablespoons all-purpose flour
  • 1 cup chicken or vegetable broth
  • 1 cup milk (whole or 2%)
  • 1 teaspoon soy sauce
  • Salt and pepper to taste
  • 1 ½ cups crispy fried onions (about 100 g)

Instructions

  1. Bring a large pot of salted water to a boil. Add the green beans and cook for 3-4 minutes until tender-crisp. Drain and immediately plunge them into a bowl of ice water to stop cooking and keep their vibrant color. Drain again and set aside.
  2. In a large skillet over medium heat, melt the butter. Add the chopped onion and cook for 2-3 minutes until softened and translucent. Add the minced garlic and cook for another 30 seconds until fragrant, stirring frequently.
  3. Add the sliced mushrooms to the skillet. Stir occasionally and cook for 6-8 minutes until they release their moisture and start to brown.
  4. Sprinkle the flour over the mushroom mixture and stir well to coat. Cook for 1-2 minutes to remove the raw flour taste. Gradually whisk in the broth, followed by the milk. Bring to a gentle simmer, stirring constantly, until the sauce thickens, about 3-5 minutes. Stir in soy sauce, salt, and pepper to taste.
  5. In a large mixing bowl, combine the blanched green beans with the creamy mushroom sauce. Fold gently to coat the beans without breaking them.
  6. Transfer the mixture to an 8×8 inch casserole dish, spreading evenly. Sprinkle the crispy fried onions generously over the top.
  7. Bake in a preheated oven at 350°F (175°C) for 25-30 minutes until bubbly and golden on top.
  8. Let the casserole sit for 5 minutes before serving.

Notes

Toast the fried onions separately for a couple of minutes before adding on top to keep them extra crunchy. Cover casserole loosely with foil for the first 20 minutes of baking to keep sauce moist, then uncover to crisp the onions. For gluten-free, use gluten-free flour and fried onions. For dairy-free, substitute milk and butter with plant-based alternatives.

Nutrition

Keywords: green bean casserole, creamy green bean casserole, holiday side dish, crispy fried onions, mushroom sauce, easy casserole