Green Bean Casserole is a beloved dish that combines fresh green beans with a creamy mushroom sauce, topped with crispy onion strings. This cozy casserole is a staple at many family gatherings and holiday dinners. It brings a taste of comfort and warmth to any meal, making it perfect for sharing with loved ones.

Why Make This Recipe
There are many reasons to make this recipe for the World’s Best Green Bean Casserole. First, it is incredibly easy to prepare, taking only about 30 minutes from start to finish. Second, the combination of fresh green beans, savory mushrooms, and crispy onion strings creates a delightful mix of flavors and textures. Lastly, it is a crowd-pleaser that anyone can enjoy, making it an excellent choice for holidays and potlucks.
How to Make World’s Best Green Bean Casserole
This recipe for World’s Best Green Bean Casserole is simple and straightforward. Follow these easy steps to create a delicious dish that everyone will love.
Ingredients:
- 2 tablespoons butter
- 2 cloves garlic (minced)
- 1/2 cup onion (finely diced)
- 8-ounce package button mushrooms (sliced)
- 3 cups fresh green beans (ends removed and cut in half)
- 3 cups low-sodium chicken broth
- 10.75-ounce can low-sodium cream of mushroom soup
- 1/4 cup grated Parmesan cheese
- 1/2 teaspoon salt
- 1/4 teaspoon black pepper
- Crispy onion strings
Directions:
- Preheat your oven to 350 degrees Fahrenheit.
- Melt butter in a large skillet over medium heat.
- Add onions and mushrooms, cooking and stirring occasionally until they are just tender.
- Add garlic and cook for another 1-2 minutes, then remove from heat and set aside.
- Place green beans and chicken broth in a medium saucepan, bringing it to a boil.
- Cook the green beans for about 8 minutes until they are crisp-tender, then drain them.
- Spray a 2-quart baking dish with cooking spray.
- In a large bowl, combine the soup, mushroom mixture, green beans, Parmesan cheese, salt, and pepper. Stir to mix well.
- Transfer the mixture to the prepared baking dish and top it with crispy onion strings.
- Bake in the preheated oven for 20 minutes until the casserole is heated through.
How to Serve World’s Best Green Bean Casserole
Serve this delicious casserole hot from the oven as a side dish alongside your main course. It pairs wonderfully with roasted meats and festive holiday meals. You can garnish with a sprinkle of extra Parmesan cheese or fresh herbs for added flavor.
How to Store World’s Best Green Bean Casserole
If you have leftovers, allow the casserole to cool completely. Then, store it in an airtight container in the refrigerator. It will stay fresh for about 3-4 days. To reheat, simply place it in the oven at 350 degrees Fahrenheit until warmed through.
Tips to Make World’s Best Green Bean Casserole
- Use fresh green beans for better flavor and texture.
- For a creamy version, you can add a little cream or sour cream to the casserole mix.
- Experiment with different types of mushrooms for varied taste.
- Feel free to adjust the salt and pepper based on your taste.
Variation
For a vegetarian version of this casserole, you can use vegetable broth instead of chicken broth. You can also replace the cream of mushroom soup with a cream of vegetable soup for extra flavor.
FAQs
1. Can I use frozen green beans instead of fresh?
Yes, you can use frozen green beans. Just make sure to thaw and drain them before adding them to the mix.
2. Is it possible to make this casserole ahead of time?
Definitely! You can prepare the casserole a day in advance, cover it, and store it in the refrigerator. Bake it just before serving.
3. What can I use instead of crispy onion strings?
If you can’t find crispy onion strings, you can substitute them with crushed crackers or breadcrumbs for a different crunch.

World’s Best Green Bean Casserole
Ingredients
For the Casserole
- 2 tablespoons butter For sautéing
- 2 cloves garlic (minced) Add flavor
- 1/2 cup onion (finely diced) For sweetness
- 8 ounces button mushrooms (sliced) For added texture
- 3 cups fresh green beans (ends removed and cut in half) Use fresh for best flavor
- 3 cups low-sodium chicken broth Can substitute with vegetable broth for a vegetarian option
- 10.75 ounces can low-sodium cream of mushroom soup For creaminess
- 1/4 cup grated Parmesan cheese For flavor enhancement
- 1/2 teaspoon salt Adjust to taste
- 1/4 teaspoon black pepper Adjust to taste
- 1 cup Crispy onion strings For topping
Instructions
Preparation
- Preheat your oven to 350 degrees Fahrenheit.
- Melt butter in a large skillet over medium heat.
- Add onions and mushrooms, cooking and stirring occasionally until they are just tender.
- Add garlic and cook for another 1-2 minutes, then remove from heat and set aside.
- Place green beans and chicken broth in a medium saucepan, bringing it to a boil.
- Cook the green beans for about 8 minutes until they are crisp-tender, then drain them.
- Spray a 2-quart baking dish with cooking spray.
- In a large bowl, combine the soup, mushroom mixture, green beans, Parmesan cheese, salt, and pepper. Stir to mix well.
- Transfer the mixture to the prepared baking dish and top it with crispy onion strings.
Baking
- Bake in the preheated oven for 20 minutes until the casserole is heated through.


