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Green Bean Casserole Recipe

Green Bean Casserole

Creamy and crunchy Green Bean Casserole perfect for holiday meals. This classic side dish features fresh green beans in a velvety sauce topped with golden fried onions.
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Prep Time 20 minutes
Cook Time 25 minutes
Total Time 50 minutes
Course Side Dish
Cuisine American
Servings 6 servings
Calories 250 kcal

Ingredients
  

  • 1½ pounds fresh green beans trimmed and halved
  • 2 tablespoons extra-virgin olive oil or light avocado oil for higher smoke point
  • 1 medium yellow onion finely diced
  • 3 cloves garlic minced
  • 1 tablespoon all-purpose flour sub gluten-free 1:1 baking mix
  • 1 cup low-sodium chicken or vegetable broth
  • ½ cup whole-milk Greek yogurt swap sour cream or dairy-free yogurt
  • 1 teaspoon Dijon mustard adds a mild tang
  • ½ teaspoon kosher salt plus more to taste
  • ¼ teaspoon freshly ground black pepper
  • 1½ cups French fried onions divided (store-bought or homemade)
  • 1 teaspoon fresh thyme leaves or ½ teaspoon dried (optional)

Instructions
 

  • Preheat oven to 375°F. Let the rack sit in the middle for even browning of the topping.
  • Bring a large pot of salted water to a boil. Add green beans and cook for 3–4 minutes until bright green and tender. Plunge into an ice bath to stop cooking, then drain well.
  • In a skillet over medium heat, warm olive oil. Add diced onion and cook until translucent, about 5–6 minutes. Stir in garlic for 30 seconds.
  • Sprinkle flour over onions, stirring constantly for about a minute to create a light roux that will thicken the sauce.
  • Slowly pour in broth while whisking. Let the mixture bubble for 2–3 minutes until slightly thickened.
  • Remove from heat and whisk in Greek yogurt, Dijon mustard, salt, pepper, and thyme. Taste and adjust seasoning.
  • Gently fold drained green beans into the creamy mixture, ensuring every piece is coated without mashing.
  • Spread the mixture in a 9x13-inch baking dish, smoothing the top with a spatula.
  • Reserve ½ cup of onions for garnish, then sprinkle the rest evenly over the casserole.
  • Bake for 20–25 minutes until bubbly around the edges. In the last 3 minutes, sprinkle reserved onions for extra crunch. Let rest 5 minutes before serving.

Notes

Use fresh, crisp green beans for best results. Full-fat Greek yogurt provides creaminess without extra calories. To avoid a thin sauce, add a cornstarch mixture if needed. For a velvety texture, blend half of the beans with the yogurt mixture.

Nutrition

Calories: 250kcal
Keyword Green Bean Casserole, Holiday Side Dish, Leftovers, make-ahead, Vegetarian
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