Green Bean Casserole with Onions

Elevate your holiday table or weeknight dinner with this classic Green Bean Casserole with Onions—a creamy, comforting dish brimming with rich flavors and irresistible textures. Tender green beans are paired with a homemade mushroom and garlic-infused sauce that’s thickened to perfection, then baked under a golden topping of crispy fried onions for the ultimate crunch. A hint of nutmeg adds an elegant depth, while optional shredded cheddar cheese provides extra indulgence. Whether you’re serving this timeless favorite as a Thanksgiving side or cozy family meal, it’s a crowd-pleaser that’s both nostalgic and modern. Quick to prepare yet big on flavor, this casserole is sure to become a recipe staple in your home!

Nutriscore Rating: 60/100

Prep Time:20 mins

Cook Time:40 mins

Total Time:60 mins

Servings: 6

Ingredients

• 500 grams green beans (trimmed and cut into 2-inch pieces)
• 3 tablespoons unsalted butter
• 200 grams mushrooms (sliced)
• 3 tablespoons all-purpose flour
• 250 milliliters milk
• 250 milliliters chicken or vegetable broth
• 2 cloves garlic (minced)
• 1 teaspoon salt
• 0.5 teaspoons black pepper
• 0.25 teaspoons ground nutmeg
• 150 grams crispy fried onions
• 120 grams shredded cheddar cheese (optional)

Directions

Step 1

Preheat your oven to 375°F (190°C).

Step 2

Bring a large pot of water to a boil and add a pinch of salt. Add the green beans and cook for 4-5 minutes until tender-crisp. Drain immediately and transfer to a bowl filled with ice water to stop the cooking process. Drain again and set aside.

Step 3

In a large skillet, melt the butter over medium heat. Add the mushrooms and cook for 5-6 minutes until softened and golden brown. Add the minced garlic and cook for another 1 minute until fragrant.

Step 4

Sprinkle the flour over the mushrooms and stir well to coat. Cook for 1-2 minutes to eliminate the raw flavor of the flour.

Step 5

Slowly whisk in the milk and broth, stirring constantly to create a smooth sauce. Allow the mixture to simmer for about 5 minutes until it thickens.

Step 6

Stir in the salt, black pepper, and nutmeg. Remove from heat.

Step 7

In a large mixing bowl, combine the cooked green beans with the mushroom sauce and half of the crispy fried onions (and cheese if using). Mix gently to coat.

Step 8

Transfer the mixture to a greased 9x13-inch (23x33-cm) baking dish. Spread it out evenly.

Step 9

Top the casserole with the remaining crispy fried onions.

Step 10

Bake in the preheated oven for 20-25 minutes, or until the top is golden and bubbly.

Step 11

Remove the casserole from the oven and let it cool for a few minutes before serving.

Nutrition Facts

Serving size	1553.7 grams (1553.7g)

Amount per serving	% Daily Value*
Calories	2179

Total Fat 157.20g	202%
Saturated Fat 82.60g	413%
Polyunsaturated Fat 0.20g
Cholesterol 245mg	82%
Sodium 5474mg	238%
Total Carbohydrate 142.00g	52%
Dietary Fiber 16.50g	59%
Total Sugars 33.70g
Protein 59.10g	118%

Vitamin D 153IU	766%
Calcium 1399mg	108%
Iron 8mg	45%
Potassium 2261mg	48%

*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

Source of Calories

Fat: 63.8%

Protein: 10.7%

Carbs: 25.6%