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Green Bean Casserole with Mushroom and Crispy Onion Topping Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 4.3 from 65 reviews
  • Author: admin
  • Prep Time: 15 minutes
  • Cook Time: 45 minutes
  • Total Time: 1 hour
  • Yield: 8 servings
  • Category: Side Dish
  • Method: Baking
  • Cuisine: American

Description

This classic Green Bean Casserole recipe features fresh green beans coated in a creamy mushroom sauce, topped with crispy fried onions, and baked to golden perfection. It’s a comforting and delicious side dish perfect for family dinners and holiday gatherings.


Ingredients

Scale

Vegetables

  • 2 pounds fresh green beans (trimmed and cut into 2-inch pieces)
  • 1 medium yellow onion (finely chopped)
  • 3 cloves garlic (minced)
  • 8 ounces button or cremini mushrooms (sliced)

Dairy & Broth

  • 2 tablespoons unsalted butter
  • 2 cups half & half
  • 1 cup chicken or vegetable broth

Seasonings & Others

  • ¼ cup all-purpose flour
  • 1 teaspoon soy sauce
  • ½ teaspoon salt
  • ½ teaspoon black pepper
  • ¼ teaspoon ground nutmeg
  • 1½ cups crispy fried onions


Instructions

  1. Preheat the oven: Preheat your oven to 375°F (190°C) to ensure it reaches the perfect temperature for baking the casserole.
  2. Blanch the green beans: Bring a large pot of salted water to a boil. Add the green beans and cook for 2-3 minutes until bright green and slightly tender. Immediately transfer them to a bowl of ice water to stop the cooking process. Drain and set aside.
  3. Sauté aromatics and mushrooms: In a large skillet, melt the butter over medium heat. Add the finely chopped onion and cook for 3-4 minutes until softened. Stir in the minced garlic and sliced mushrooms, cooking for 5-7 minutes until the mushrooms release their moisture and begin to brown.
  4. Add flour to thicken: Sprinkle the flour evenly over the mushroom mixture and stir to coat. Cook for 1-2 minutes to eliminate the raw flour taste while combining with the sautéed ingredients.
  5. Make the creamy sauce: Gradually whisk in the broth and half & half, stirring constantly to prevent lumps. Add soy sauce, salt, black pepper, and ground nutmeg. Simmer the sauce for about 5 minutes, stirring frequently, until it thickens to a creamy consistency.
  6. Combine green beans and sauce: In a 9×13-inch casserole dish, mix the blanched green beans, mushroom sauce, and ½ cup of the crispy fried onions together until the beans are evenly coated. Spread the mixture into an even layer.
  7. Add crispy onion topping: Sprinkle the remaining crispy fried onions evenly over the top of the casserole for a crunchy finish.
  8. Bake the casserole: Bake in the preheated oven for 20-25 minutes until the sauce is bubbly and the onions on top turn golden brown. Remove from oven and let cool slightly before serving.

Notes

  • Blanching green beans helps retain their bright color and crisp texture.
  • For a vegetarian version, use vegetable broth instead of chicken broth.
  • Ensure to sauté mushrooms until browned for deeper flavor.
  • If crispy fried onions are not available, you can make your own by frying thinly sliced onions until golden.
  • Leftovers can be refrigerated in an airtight container for up to 3 days and reheated before serving.