Green Bean Casserole has earned its place as one of the most beloved American side dishes, especially when the holidays roll around. This comforting classic delivers creamy texture, savory depth, and a crisp onion topping that feels familiar and satisfying every single time. With only five simple ingredients and minimal prep, this dish fits perfectly into busy weeknights and special gatherings alike. If you want a reliable vegetable side dish that always earns compliments, Green Bean Casserole remains the gold standard for good reason.
Story
Green Bean Casserole began its journey in the Campbell’s Test Kitchen back in 1955, and since then, Green Bean Casserole has remained a trusted staple on American tables. Generations have relied on Green Bean Casserole because it balances ease with comforting flavor, making it ideal for both novice cooks and seasoned hosts. Over the years, Green Bean Casserole became synonymous with family gatherings, potlucks, and holiday meals. What keeps Green Bean Casserole relevant today is its simplicity, creamy texture, and crowd-pleasing appeal that never feels dated or fussy.
Ingredients
This recipe uses pantry-friendly ingredients that come together quickly while delivering familiar flavor.
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1 can (10.5 ounces) Campbell’s® Condensed Cream of Mushroom Soup or Cream of Celery Soup
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1/2 cup 2% milk
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1 teaspoon soy sauce
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4 cups cooked cut green beans
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1 1/3 cups French’s® French Fried Onions, divided
Step-by-Step Instructions
Preparing the Ingredients
Start by preparing the green beans before assembling the casserole. If you use fresh green beans, trim the ends and boil them for two to four minutes until they turn crisp-tender. Immediately transfer them into ice water so they keep their bright green color. Drain them well before use. Frozen green beans should thaw fully and drain, while canned green beans should rinse and drain to remove excess sodium.
Cooking Instructions
Heat the oven to 350°F and place the soup, milk, soy sauce, green beans, and two-thirds cup of the French fried onions into a 1 1/2-quart oven-safe casserole dish. Stir until everything blends evenly, then season with salt and pepper. Bake the casserole for twenty-five minutes until hot and bubbling. Remove it from the oven, stir gently, and sprinkle the remaining onions evenly over the top. Return it to the oven for five more minutes until the onions turn golden brown and crisp.
Tips for Perfect Results
Common Mistakes to Avoid
Avoid overcooking the green beans before baking, as they will continue to soften in the oven. Skipping proper draining also leads to a watery casserole. Another mistake involves adding all the onions at once, which prevents that signature crispy topping from forming correctly.
Pro Tips for Better Flavor
Use freshly ground black pepper to add subtle warmth. A splash of soy sauce adds savory depth without overpowering the dish. Letting the casserole rest for a few minutes before serving helps the creamy sauce settle and coat the beans evenly.
Serving and Storage
How to Serve
Serve Green Bean Casserole warm directly from the baking dish. It pairs beautifully with roasted turkey, ham, or chicken and works well alongside mashed potatoes or stuffing. This holiday classic dish fits effortlessly into any traditional menu.

How to Store Leftovers
Store leftovers in an airtight, oven-safe container in the refrigerator for up to three days. Reheat in the oven at 325°F until warmed through to help maintain the crispy onion topping.
Conclusion
Green Bean Casserole continues to prove that simple recipes often stand the test of time. With creamy texture, savory flavor, and minimal effort, this 5 ingredient side delivers comfort and familiarity with every bite. Whether you prepare it for a holiday feast or a casual family dinner, this casserole always feels like home.
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Frequently Asked Questions
Can I make Green Bean Casserole ahead of time?
Yes, you can assemble the casserole mixture ahead and refrigerate it without the onion topping. Add the onions just before baking so they stay crisp.
Can I use frozen or canned green beans?
Frozen and canned green beans both work well. Just thaw and drain frozen beans thoroughly, and rinse canned beans to control moisture and salt.
What makes this a Campbell’s soup recipe classic?
The use of condensed soup creates a creamy base that binds the casserole together, delivering the signature flavor that made this creamy mushroom casserole famous.
Print
Green Bean Casserole
- Total Time: 40 minutes
- Yield: 6 servings 1x
Description
A classic Green Bean Casserole made with tender green beans, creamy mushroom soup, and crispy fried onions, ready with just five simple ingredients.
Ingredients
- 1 can (10.5 ounces) condensed cream of mushroom soup
- 1/2 cup 2% milk
- 1 teaspoon soy sauce
- 4 cups cooked cut green beans
- 1 1/3 cups French fried onions
Instructions
- Heat the oven to 350°F
- Mix soup, milk, soy sauce, green beans, and 2/3 cup onions in a casserole dish
- Bake for 25 minutes until hot and bubbling
- Stir the mixture and top with remaining onions
- Bake 5 minutes until onions are golden brown
Notes
- Blanch fresh green beans before using
- Drain beans well to avoid excess liquid
- Let casserole rest a few minutes before serving
- Prep Time: 10 minutes
- Cook Time: 30 minutes
- Category: Side Dish
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 serving
- Calories: 152
- Sugar: 4 g
- Sodium: 620 mg
- Fat: 9 g
- Saturated Fat: 3.5 g
- Unsaturated Fat: 5 g
- Trans Fat: 0 g
- Carbohydrates: 15 g
- Fiber: 3 g
- Protein: 3 g
- Cholesterol: 10 mg