Green bean casserole is a timeless side dish that has graced dinner tables for generations. Whether it's a holiday feast or a cozy family dinner, this hearty and flavorful casserole brings together the perfect combination of creamy sauce, tender green beans, and crispy fried onions. In this article, you’ll discover everything you need to know to make a perfect green bean casserole from scratch. Keep reading for tips, variations, and everything else you need to master this classic recipe!

What is Green Bean Casserole?
Green bean casserole is a popular American dish typically made with green beans, cream of mushroom soup, milk, and topped with crispy fried onions. It was originally created in the 1950s and quickly became a holiday favorite, especially during Thanksgiving and Christmas. The creamy, savory flavor paired with the crispy topping creates a delightful contrast that makes this dish hard to resist.
Ingredients List for Green Bean Casserole
To create a classic green bean casserole, you'll need a few essential ingredients. Below is a list of items you'll need for the standard recipe:
Classic Ingredients:
- Fresh or canned green beans – 4 cups (fresh or 2 cans drained)
- Cream of mushroom soup – 1 can (10.5 oz)
- Milk – ¾ cup
- Soy sauce – 1 teaspoon
- Black pepper – ½ teaspoon
- Crispy fried onions – 1 ½ cups (divided)
- Butter (optional) – 1 tablespoon for sautéing fresh beans
Ingredients List for Homemade Version (No Canned Soup)
If you're looking for a from-scratch version without using canned soup, you can make a homemade version with these ingredients instead:
Homemade Ingredients:
- Fresh green beans – 4 cups, trimmed and cut
- Button mushrooms – 1 cup, sliced
- Garlic – 2 cloves, minced
- Butter – 2 tablespoons
- Flour – 2 tablespoons (for thickening)
- Chicken or vegetable broth – 1 cup
- Heavy cream or half-and-half – ½ cup
- Soy sauce – 1 teaspoon
- Crispy fried onions – 1 ½ cups (divided)
- Salt and black pepper – to taste
Substitutions and Variations
If you want to switch things up or accommodate dietary preferences, there are plenty of ways to customize your green bean casserole recipe. Here are some common substitutions and variations:
1. Gluten-Free Version:
- Substitute gluten-free cream of mushroom soup or make your own using gluten-free flour.
- Use gluten-free crispy fried onions or opt for a topping of gluten-free breadcrumbs.
2. Dairy-Free Option:
- Replace the cream of mushroom soup with a dairy-free version or make your own by using almond milk or coconut cream.
- Replace regular butter with vegan butter or olive oil.
3. Low-Sodium Version:
- Use low-sodium soy sauce and low-sodium cream of mushroom soup.
- Reduce the amount of salt added to the dish, allowing the natural flavors to shine.
4. Vegetarian Version:
- Simply swap out any chicken broth for vegetable broth in the homemade version.
- You can also add sautéed shallots, garlic, or a splash of white wine for added depth of flavor.
5. Adding Cheese:
- Some people enjoy adding a layer of shredded cheese like cheddar, Gruyère, or parmesan to the casserole for a richer taste.
Step-by-Step Cooking Instructions

Ready to whip up a classic green bean casserole? Follow these simple instructions to ensure your casserole comes out perfectly every time.
How to Cook Green Bean Casserole: A Step-by-Step Guide
Step 1: Preheat the oven
Preheat your oven to 350°F (175°C). Grease a 9x13-inch baking dish lightly with butter or cooking spray.
Step 2: Prepare the Green Beans
- If you’re using fresh green beans, trim the ends and cut them into bite-sized pieces. Blanch them by boiling them in salted water for 3-4 minutes, then immediately transfer them to ice water to stop the cooking process. Drain and set aside.
- If you’re using canned green beans, simply drain and set them aside.
Step 3: Make the Sauce
- For the classic recipe: In a mixing bowl, combine the cream of mushroom soup, milk, soy sauce, and black pepper. Stir well until smooth.
- For the homemade version: In a large skillet, melt butter over medium heat. Add garlic and mushrooms, sautéing until the mushrooms are soft. Sprinkle flour over the mushrooms and stir to coat evenly. Gradually whisk in broth and cream, cooking until the sauce thickens. Add soy sauce, salt, and pepper to taste.
Step 4: Assemble the Casserole
In your prepared baking dish, combine the green beans and your sauce mixture. Stir to ensure the beans are well-coated. Mix in half of the crispy fried onions.
Step 5: Bake the Casserole
Place the casserole in the preheated oven and bake for 25-30 minutes or until the mixture is bubbly and heated through.
Step 6: Add Topping
Remove the casserole from the oven and sprinkle the remaining crispy fried onions evenly over the top. Return to the oven and bake for an additional 5-10 minutes, or until the onions are golden brown and crispy.
Step 7: Serve
Let the casserole cool for a few minutes before serving. Enjoy!
Common Mistakes to Avoid
Even though green bean casserole is relatively easy to make, a few mistakes can affect its final outcome. Here’s what to watch out for:
1. Skipping the Blanching Step
If you’re using fresh green beans, always blanch them first. Skipping this step can result in beans that are too crunchy and undercooked.
2. Using Canned Green Beans Without Draining
Canned green beans come packed in liquid, and failing to drain them thoroughly can make your casserole soggy.
3. Not Adding Enough Seasoning
Green beans are mild in flavor, so don’t forget to season your sauce well with salt, pepper, and other seasonings. A pinch of garlic powder or onion powder can add extra flavor.
4. Overcooking the Casserole
Be careful not to overcook the casserole as this can lead to mushy green beans. Keep an eye on the timer and remove the dish once it's bubbly and heated through.
Serving and Presentation Tips
Your green bean casserole can be the star of the side dishes with just a little extra effort in presentation. Here’s how to make your casserole look as good as it tastes.
How to Serve Green Bean Casserole
Green bean casserole pairs perfectly with a wide range of main dishes, especially roasted meats like turkey, ham, or chicken. Serve it as a side dish during holiday dinners or even for a casual weeknight meal. Make sure to offer generous servings to showcase those delicious layers of creamy green beans and crispy topping.
Presentation Ideas for Green Bean Casserole
- Use a Beautiful Baking Dish: Choose a ceramic or glass baking dish with a clean and simple design to give your casserole an elegant look on the table.
- Garnish with Fresh Herbs: A sprinkle of fresh parsley or thyme on top of the casserole can add a pop of color and freshness.
- Serve Individual Portions: If you want a more sophisticated presentation, serve the casserole in individual ramekins or mini cast-iron skillets.
Green Bean Casserole Recipe Tips
- Make it Ahead: You can prepare the casserole up to two days in advance. Assemble the casserole without the fried onion topping and store it in the fridge. When you’re ready to bake, add the onions and pop it in the oven.
- Double the Recipe: If you're feeding a crowd, this recipe can easily be doubled or tripled. Just make sure to use a larger baking dish or divide the casserole into two dishes for even cooking.
- Customize the Texture: If you prefer a creamier casserole, add an extra splash of milk or cream to the sauce. For a crunchier topping, mix breadcrumbs with the fried onions before adding them to the top.
Frequently Asked Questions (FAQs)
Q: Can I use frozen green beans instead of fresh or canned?
A: Yes, frozen green beans work perfectly. Just make sure to thaw and drain them before using to avoid excess moisture.
Q: Can I use different types of soup instead of cream of mushroom?
A: Absolutely! Cream of chicken or cream of celery can be used as substitutes for a different flavor profile.
Q: How do I store leftover green bean casserole?
A: Leftovers can be stored in an airtight container in the refrigerator for up to 3-4 days. Reheat in the oven at 350°F until warmed through.
Q: Can I freeze green bean casserole?
A: Yes, you can freeze it. However, the fried onion topping might lose its crispiness. If freezing, do so before adding the onions and add them fresh when reheating.
Conclusion
Green bean casserole is a classic dish that can easily be customized to suit any taste or dietary requirement. With its savory flavor, creamy texture, and crunchy topping, it's no wonder why it's a favorite on so many holiday tables. Whether you stick to the traditional recipe or try out one of the many variations, this dish is sure to be a hit. So, roll up your sleeves and get ready to impress your guests with the ultimate green bean casserole!
PrintGreen Bean Casserole Recipe
This Green Bean Casserole recipe is a perfect holiday side dish made with fresh green beans, a creamy mushroom sauce, and topped with crispy fried onions. Simple, delicious, and a family favorite.
- Prep Time: h10 minutes
- Cook Time: 30 minutes
- Total Time: 40 minutes
- Yield: 6 servings 1x
- Category: Side Dish
- Method: Baking
- Cuisine: American
- Diet: Vegetarian
Ingredients
- 1 lb fresh green beans, trimmed
- 1 can (10.5 oz) cream of mushroom soup
- ½ cup milk
- 1 cup fried onions (plus extra for topping)
- Salt and pepper to taste
Instructions
- Preheat oven to 350°F (175°C).
- Boil green beans for 5 minutes, then drain and set aside.
- In a large bowl, mix the cream of mushroom soup, milk, and season with salt and pepper.
- Add green beans and half of the fried onions, stirring to combine.
- Transfer mixture to a baking dish.
- Bake for 25 minutes, then top with the remaining fried onions and bake for another 5 minutes until golden and crispy.
- Serve hot and enjoy!
Notes
- For extra flavor, use fresh mushrooms or add garlic to the sauce.
- You can substitute fresh green beans with canned or frozen.
Nutrition
- Serving Size: 1 serving (about ⅙ of casserole)
- Calories: 180 kcal
- Sugar: 2 g
- Sodium: 400 mg
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