Green Bean Casserole is a classic, beloved dish, especially during holiday seasons. It’s simple, comforting, and the perfect side dish for gatherings or weeknight dinners. This easy Green Bean Casserole recipe is not only delicious but also quick to prepare, making it a go-to option for both novice and seasoned cooks. Read on to discover how to make this timeless dish, step-by-step, and pick up some essential tips for mastering the recipe. Let's dive in!

What is Green Bean Casserole?
Green Bean Casserole is a popular American dish traditionally served during Thanksgiving and Christmas. It was first created by the Campbell Soup Company in 1955 as a quick and simple recipe using ingredients that most households already had on hand: green beans, cream of mushroom soup, and French fried onions. Today, it's still a staple on many holiday tables because of its simplicity, ease of preparation, and crowd-pleasing taste.
Ingredients List for Green Bean Casserole
Before you get started, gather all your ingredients. Here’s what you’ll need:
- 24 oz Frozen Green Beans – You can use fresh green beans if you prefer, but frozen green beans work perfectly for this dish.
- 2 cans of Cream of Mushroom Soup (10.5 oz each) – This is the base of the creamy sauce that binds the dish together.
- ½ cup Milk – Helps to thin out the soup and create a smoother texture.
- ½ teaspoon Salt – Enhances the overall flavor.
- ½ teaspoon Pepper – Adds a touch of heat and seasoning.
- 6 oz can of French Fried Onions – These crispy onions add the perfect crunchy topping to the casserole.
Substitutions and Variations
One of the best things about Green Bean Casserole is that it’s versatile. You can easily swap ingredients to fit your dietary needs or taste preferences. Here are a few substitutions and variations you can consider:
- Fresh vs. Frozen Green Beans: If you prefer a fresher taste, you can use fresh green beans instead of frozen. Simply blanch the green beans in boiling water for about 3-4 minutes, then drain and pat them dry before using them in the recipe.
- Mushroom Alternatives: If you're not a fan of mushrooms, you can use cream of chicken, cream of celery, or even cream of broccoli soup in place of cream of mushroom soup. This will change the flavor profile slightly, but it's a great way to customize the dish.
- Dairy-Free Option: For those who are lactose intolerant or following a dairy-free diet, you can use a plant-based milk like almond or oat milk, and opt for a dairy-free cream of mushroom soup.
- Extra Cheese: Love cheese? Add a layer of shredded cheddar or parmesan cheese on top of the green bean mixture before adding the French fried onions for an extra cheesy twist.
- Vegan Option: To make this dish vegan, replace the cream of mushroom soup with a dairy-free alternative and use dairy-free milk. Additionally, make sure the French fried onions you're using are vegan-friendly.
Step-by-Step Cooking Instructions
Now that you’ve gathered all your ingredients, let’s move on to the step-by-step process of creating the perfect Green Bean Casserole.

How to Cook Green Bean Casserole: A Step-by-Step Guide
Step 1: Preheat the Oven
Before you start assembling your ingredients, preheat your oven to 350°F (175°C). This will ensure that the casserole bakes evenly and has a golden, crispy topping.
Step 2: Prepare the Green Beans
If you’re using frozen green beans, there’s no need to thaw them. Simply measure out 24 oz of frozen green beans and set them aside. If using fresh green beans, trim the ends and blanch them in boiling water for 3-4 minutes before draining them.
Step 3: Mix the Soup and Seasonings
In a large mixing bowl, combine the 2 cans of cream of mushroom soup, ½ cup of milk, ½ teaspoon of salt, and ½ teaspoon of pepper. Whisk the mixture until smooth and creamy. This is the base of your casserole, which will provide a rich and savory flavor.
Step 4: Combine the Green Beans and Soup Mixture
Add the green beans to the soup mixture and stir until the green beans are evenly coated with the creamy soup mixture.
Step 5: Layer the Casserole
In a 9x13 inch casserole dish, spread the green bean and soup mixture evenly. This will form the base of your casserole.
Step 6: Bake the Casserole
Place the casserole dish in the preheated oven and bake for 25 minutes. This will allow the casserole to heat through and the flavors to meld together.
Step 7: Add the French Fried Onions
After 25 minutes, remove the casserole from the oven and sprinkle the French fried onions evenly over the top. Return the casserole to the oven and bake for an additional 5-10 minutes, or until the onions are golden brown and crispy.
Step 8: Serve Hot
Once the casserole is baked and the onions are crispy, remove it from the oven and allow it to cool slightly before serving.
Common Mistakes to Avoid
While this recipe is fairly simple, there are a few common mistakes you’ll want to avoid to ensure your Green Bean Casserole turns out perfectly:
- Skipping the Blanching Step: If you’re using fresh green beans, be sure to blanch them before mixing them with the soup. This will help soften them and ensure they’re cooked through during the baking process.
- Not Mixing the Soup Mixture Well: Make sure the soup, milk, salt, and pepper are thoroughly combined. Any lumps in the soup mixture can lead to uneven cooking and pockets of unmixed soup.
- Overcooking the Casserole: Be mindful of the baking time. Overbaking can dry out the casserole, making it less creamy and flavorful.
- Forgetting the Onion Topping: The French fried onions are key to giving the casserole its signature crunch and flavor. Don’t forget to add them during the last few minutes of baking.
Serving and Presentation Tips
Once your Green Bean Casserole is perfectly baked, it’s time to serve it up in style. Here are a few ideas to make your dish look as good as it tastes:
How to Serve Green Bean Casserole
- Family-Style: Green Bean Casserole is best served family-style in the baking dish. Place it in the center of the table, and let guests help themselves. You can also garnish it with some freshly chopped parsley or chives for added color.
- Individual Portions: For a more formal presentation, scoop individual servings of the casserole onto plates or into small ramekins.
Presentation Ideas for Green Bean Casserole
- Holiday Touch: If you’re serving this for a holiday meal, place the casserole dish on a decorative table runner or use a festive serving dish to match the occasion.
- Garnishes: Garnish with freshly ground black pepper, a sprinkle of sea salt, or fresh herbs like parsley or thyme to add a pop of color and enhance the flavor.
Green Bean Casserole Recipe Tips
- Make Ahead: You can prepare the casserole up to 24 hours in advance. Simply assemble the green bean and soup mixture, cover it with foil, and refrigerate. When ready to bake, add the French fried onions and follow the baking instructions.
- Double the Recipe: If you’re feeding a large crowd, this recipe is easily doubled. Use a larger baking dish or make two separate casseroles.
- Crispier Onions: If you prefer extra crispy French fried onions, add half of the onions during the initial baking step, and then add the remaining half in the final 5 minutes.
Frequently Asked Questions (FAQs)
Q: Can I use fresh green beans instead of frozen?
A: Yes! Fresh green beans work well in this recipe. Just be sure to blanch them in boiling water for 3-4 minutes before using them.
Q: Can I make this dish ahead of time?
A: Absolutely. You can prepare the casserole up to 24 hours in advance and store it in the fridge. Add the French fried onions right before baking.
Q: How long will leftovers last?
A: Leftover Green Bean Casserole can be stored in an airtight container in the refrigerator for up to 3-4 days. Reheat it in the oven or microwave before serving.
Q: Can I add cheese to this recipe?
A: Yes! Adding shredded cheese like cheddar or Parmesan can give the casserole an extra layer of flavor. Sprinkle it on top of the green beans before adding the French fried onions.
Conclusion
Green Bean Casserole is a comforting, crowd-pleasing dish that’s easy to prepare and versatile enough to fit any occasion. Whether you're making it for a holiday feast or a simple weeknight dinner, this recipe is sure to become a favorite in your home. With the step-by-step instructions, substitutions, and helpful tips provided, you'll be able to create the perfect Green Bean Casserole every time. Don’t forget to experiment with variations and make it your own!
PrintEasy Green Bean Casserole Recipe
This easy green bean casserole recipe is perfect for a simple and delicious side dish. Featuring frozen green beans, cream of mushroom soup, and crispy French fried onions, it’s the ultimate comfort food. This recipe combines flavorful ingredients and is easy to prepare with minimal prep time.
- Prep Time: 10 minutes
- Cook Time: 35 minutes
- Total Time: 45 minutes
- Yield: 8 servings 1x
- Category: Side Dish
- Method: Baking
- Cuisine: American
- Diet: Vegetarian
Ingredients
- 24 oz Frozen Green Beans
- 2 cans of Cream of Mushroom Soup
- ½ cup Milk
- ½ tsp Salt
- ½ tsp Pepper
- 6 oz can of French Fried Onions
Instructions
- Preheat your oven to 350°F (175°C).
- In a large bowl, mix the cream of mushroom soup, milk, salt, and pepper until smooth.
- Stir in the frozen green beans until they are fully coated.
- Pour the mixture into a 9x13-inch baking dish.
- Bake for 25 minutes.
- Sprinkle the French fried onions over the top and bake for another 5-10 minutes until the onions are golden and crispy.
- Serve hot and enjoy!
Notes
- For added flavor, mix in ½ cup of shredded cheddar cheese before baking.
- You can substitute fresh or canned green beans if desired.
Nutrition
- Serving Size: ⅛ of casserole
- Calories: 220
- Sugar: 3g
- Sodium: 700mg
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