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Grandma's Old-Fashioned Green Bean Casserole

Forget the canned soup version—Grandma made this green bean casserole from scratch, and once you taste the difference, you'll never go back! It's creamy, savory, and topped with those crispy fried onions we all love. This is comfort food at its finest, and it's been gracing our holiday table for generations.
Print Recipe
Prep Time 15 minutes
Cook Time 35 minutes
Total Time 50 minutes
Servings: 8 servings
Ingredients Method

Ingredients
  

  • 2 pounds fresh green beans trimmed and cut into 2-inch pieces
  • 3 tablespoons butter
  • 8 ounces fresh mushrooms sliced
  • 1 small onion finely diced
  • 2 cloves garlic minced
  • 3 tablespoons all-purpose flour
  • 1 cup chicken broth
  • 1 cup heavy cream
  • 1/2 teaspoon salt
  • 1/4 teaspoon black pepper
  • 1/4 teaspoon ground nutmeg
  • 1 1/2 cups french fried onions divided

Method
 

  1. Preheat oven to 350°F. Bring a large pot of salted water to a boil.
  2. Blanch green beans in boiling water for 5 minutes until bright green and crisp-tender. Drain and set aside.
  3. In a large skillet, melt butter over medium heat. Add mushrooms and onion, cooking until softened, about 6-7 minutes.
  4. Add garlic and cook for 1 minute until fragrant. Sprinkle flour over the vegetables and stir to coat.
  5. Gradually whisk in chicken broth and cream. Cook, stirring constantly, until the sauce thickens, about 3-4 minutes.
  6. Season with salt, pepper, and nutmeg. Remove from heat and stir in green beans and 3/4 cup of the fried onions.
  7. Transfer mixture to a greased 9x13-inch baking dish. Bake for 20 minutes.
  8. Top with remaining fried onions and bake for 5 more minutes until onions are golden and crispy. Serve hot.