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5.0 from 480 votes

Green Bean Casserole from Scratch

Fresh Green Bean Casserole covered in french fried onions is a creamy, classic Thanksgiving side dish that nobody seems able to resist despite full plates and full bellies!

Prep Time
15 mins
Cook Time
15 mins
Total Time
40 mins
Servings: 8 -10 servings
Calories: 260 kcal
Course: Side Dish
Cuisine: American

Ingredients

  • 2 pounds fresh green beans rinsed and ends trimmed, then chopped in half
  • 2 Tablespoons salted butter
  • 1 medium onion chopped
  • 2 garlic cloves minced
  • 8 ounces baby bella or white button mushrooms chopped (optional)
  • 1 teaspoon kosher salt
  • 1/2 teaspoon freshly ground black pepper
  • 2 Tablespoons all-purpose flour
  • 1 cup chicken broth
  • 1 cup half-and-half
  • 1/2 cup Panko bread crumbs
  • 6 ounces French fried onions

Instructions

    Cup of Yum
  1. Preheat the oven to 375° F. Heat a large pot of salted water to a boil. I aim for about 1 1/2 tablespoons of salt in a gallon of water, but usually just eyeball it. Prepare a large bowl with an ice bath for blanching the beans.
  2. Blanch the beans by adding them to the boiling water and cooking for 5 minutes. Then drain in a colander and immediately plunge the beans into a large bowl of ice water. This will stop the cooking process so the beans don't turn mushy. Drain and set aside.
  3. Melt the butter in a large skillet over medium-high heat. Add the onion and garlic, sautéing for 4 to 5 minutes until the onions start to soften. Add the mushrooms (if using), salt and pepper and cook another 1 to 2 minutes.
  4. Sprinkle the flour over the softened onions and stir to combine. Cook for 2 minutes, then whisk in the chicken broth to make sure there are no lumps, then the half and half. Bring the mixture to a simmer and cook until it has thickened, stirring occasionally, about 6 minutes.
  5. Pour the sauce over the beans and stir to combine, then transfer to a large 9x13-inch casserole dish and sprinkle with the breadcrumbs and french fried onions.  
  6. Bake for 20 minutes until hot and bubbly. Cover the dish with foil if the onions start to brown too quickly.  

Notes

  • Optional:  If you want mushrooms in your green bean casserole, chop about 8 ounces of button mushrooms or 2 portobello mushrooms and add once the onions and garlic have been sauteed, before adding the flour. 

Nutrition Information

Calories 260kcal (13%) Carbohydrates 23g (8%) Protein 3g (6%) Fat 17g (26%) Saturated Fat 8g (40%) Cholesterol 18mg (6%) Sodium 647mg (27%) Potassium 322mg (9%) Fiber 3g (12%) Sugar 4g (8%) Vitamin A 975IU (20%) Vitamin C 17.1mg (19%) Calcium 86mg (9%) Iron 1.5mg (8%)

Nutrition Facts

Serving: 8-10 servings

Amount Per Serving

Calories 260

% Daily Value*

Calories 260kcal 13%
Carbohydrates 23g 8%
Protein 3g 6%
Fat 17g 26%
Saturated Fat 8g 40%
Cholesterol 18mg 6%
Sodium 647mg 27%
Potassium 322mg 7%
Fiber 3g 12%
Sugar 4g 8%
Vitamin A 975IU 20%
Vitamin C 17.1mg 19%
Calcium 86mg 9%
Iron 1.5mg 8%

* Percent Daily Values are based on a 2,000 calorie diet.