Side Dishes
This Campbell's green bean casserole original recipe brings back the nostalgic comfort of mid-century home cooking with its creamy, crispy layers. The classic combination of tender green beans, velvety mushroom soup, and crunchy fried onions delivers that familiar, heartwarming taste we all remember.
I've recreated this iconic dish exactly as it was made in the 1950s, ensuring every bite transports you to a simpler time.
The foundation of this recipe lies in its simplicity—just a handful of ingredients that work together to create a dish that's both comforting and satisfying. Using cream of mushroom soup as the base gives it that rich, savory depth, while the green beans add freshness.
The key to achieving that perfect texture is a crispy topping of fried onions, which adds a satisfying crunch that contrasts beautifully with the creamy filling.
What makes this recipe truly special is how it balances tradition with ease. Baked at 350°F for about 30 minutes, it transforms simple ingredients into a restaurant-quality side dish that pairs perfectly with roasted chicken or turkey.
The aroma alone will fill your kitchen with warmth, making it impossible to resist the first bite. This is the kind of dish that brings people together, one comforting spoonful at a time.
While the original recipe is timeless, I’ve included a few modern twists—like gluten-free breadcrumbs or vegan substitutions—to ensure everyone can enjoy it. Whether you're serving it at a holiday dinner or a cozy family meal, this green bean casserole is a foolproof classic that never goes out of style.
Let’s get cooking!
Ingredients for campbell's green bean casserole original
Nine essential ingredients recreate that iconic 1955 Campbell's green bean casserole we all love.
| Ingredient | Amount | Notes |
|---|---|---|
| Fresh Green Beans 🥦 | 2 lbs | Trimmed, cut into 2-inch pieces |
| Cream of Mushroom Soup 🍄 | 2 cans | 10.5 oz each, Campbell's Original |
| Milk 🥛 | ½ cup | Whole milk for creaminess |
| French Fried Onions 🧅 | 1 ½ cups | Seasoned, for topping |
| All-Purpose Flour 🌾 | ¼ cup | For thickening mixture |
| Butter 🧈 | ½ cup | Unsalted, cubed |
| Salt 🧂 | ½ tsp | Diamond Crystal kosher |
| Black Pepper 🌶️ | ¼ tsp | Freshly ground |
| Garlic Powder 🧄 | ½ tsp | For subtle depth |
| Parmesan Cheese 🧀 | ¼ cup | Freshly grated |
| Sour Cream 🍦 | ¼ cup | Full-fat for richness |
| Gluten-Free Breadcrumbs 🍞 | ½ cup | Optional modern substitution |
The Campbell's cream of mushroom soup is the heart of this dish—stick with the original recipe for authentic flavor. Walmart or Kroger always stock the classic cans, and I recommend buying a few extra since they keep well unopened. Fresh green beans are non-negotiable for texture; frozen works in a pinch but lacks that crisp snap. For the fried onions, French's brand delivers that perfect crunch, though Trader Joe's has a great organic alternative. The Parmesan adds depth, so grate it fresh from a wedge—pre-shredded contains anti-caking agents that alter the texture.
No Campbell's soup? Homemade mushroom sauce with cream and butter works beautifully, though it requires extra prep time. For a vegan version, substitute coconut milk for dairy and use vegan Parmesan. The gluten-free breadcrumbs are optional but perfect for modern diets—Bob's Red Mill makes an excellent version. Short on milk? Heavy cream at half the amount creates a richer base. The garlic powder and black pepper are subtle but essential; Penzeys spices offer the highest quality if you're willing to splurge, but regular grocery store brands work fine for this application.
This casserole reheats beautifully—cover with foil for 5 minutes at 350°F to restore crispiness. Leftovers keep for 4-5 days in the fridge, though it tastes best the first day. For holiday prep, assemble ahead and refrigerate overnight—the flavors meld beautifully. Portion into individual casserole dishes for easy serving, and always make extra; it disappears faster than you'd expect. Freeze portions for up to 3 months in airtight containers.
Why You'll Love This Recipe
- One-Bowl Magic: I swear by this recipe because it’s the kind of dish where you dump, mix, and bake—no extra pans, no fuss. Just trim those green beans (or buy them pre-cut if you’re really short on time), toss them in a bowl with the soup, milk, and a little flour roux, then top with onions. Done. My lazy Sunday afternoons thank me every time.
- Creamy Crunch Perfection: That moment when the French fried onions hit the oven? Chef’s kiss. The creamy mushroom soup base is rich but not heavy, and the crispy onions add this addictive contrast—soft green beans with a golden, buttery crunch. It’s the kind of flavor combo that makes you go back for seconds without even trying.
- Potluck Hero: Between us, this is my go-to for holiday dinners, church potlucks, or even a last-minute family gathering. It reheats beautifully, travels well, and—let’s be honest—everyone recognizes it. My mom-in-law still asks for it at Thanksgiving, and I’ve never had to explain what’s in it because the name alone does the work.
- Budget-Friendly Leftovers: I make a double batch because it’s ridiculously cost-effective. Fresh green beans are cheap, Campbell’s soup is a pantry staple, and you’re not using specialty ingredients. Plus, the leftovers? Just as good cold the next day—perfect for a quick lunch or a sad desk dinner. My wallet and my freezer both win.
Step-by-step instructions for Campbell's green bean casserole original recipe
This classic 1955 method delivers creamy, cheesy comfort with perfect texture every time.
Blanch and Prepare the Green Beans
Trim the ends from the 2 lbs of fresh green beans and cut them into 2-inch pieces. This size ensures even cooking and proper texture in the final dish. Place the beans in a large pot of boiling salted water and cook for exactly 5 minutes. You're looking for beans that are tender-crisp—they should still have a slight bite when you test one with a fork.
Drain the beans immediately in a colander and rinse them under cold water to stop the cooking process. This blanching step is crucial—it removes any bitterness while preserving the beans' vibrant green color. Spread them on a clean kitchen towel to dry completely before proceeding. The drier the beans, the better they'll crisp up in the oven later.
Create the Creamy Mushroom Mixture
In a large mixing bowl, combine the 2 cans of cream of mushroom soup, the 0.5 cup of milk, the 0.5 cup of butter, the 0.25 cup of all-purpose flour, the 0.5 tsp of salt, the 0.25 tsp of black pepper, and the 0.5 tsp of garlic powder. Whisk vigorously until the mixture is completely smooth and free of any lumps. The consistency should be thick but pourable—like heavy cream.
This mixture forms the creamy base of your casserole. The flour helps thicken it as it bakes, while the butter adds rich flavor. If you notice any graininess, strain the mixture through a fine-mesh sieve for an ultra-smooth texture. The garlic powder provides subtle depth without overpowering the classic flavors.
Assemble the Casserole Layers
Preheat your oven to 350°F. In a 9x13-inch baking dish, spread half of the blanched green beans in an even layer. Then pour half of the creamy mushroom mixture over the beans, spreading it evenly with a rubber spatula. Repeat with the remaining beans and sauce, creating a second layer. This layering technique ensures every bite has both the creamy sauce and crisp green beans.
Gently swirl a knife through the casserole a few times to create marbling between the layers. This prevents clean separation when serving. The casserole should look like a beautiful blend of green and creamy white—visually appealing and ready for the next step. Don't press down on the beans as this can make them mushy during baking.
Add the Topping and Bake to Perfection
In a small bowl, mix together the 0.25 cup of freshly grated parmesan cheese, the 0.25 cup of sour cream, and the 0.5 cup of gluten-free breadcrumbs. Sprinkle this mixture evenly over the top of the casserole, pressing down gently with your fingers to create an even, crumbly topping. Then scatter the 1.5 cups of French fried onions over the top, covering the entire surface completely.
Bake uncovered for 30-35 minutes until the top is golden brown and bubbly. The edges should be slightly crisp while the center remains creamy. If you notice the onions browning too quickly, tent the dish with aluminum foil for the last 10 minutes of baking. The casserole is done when a toothpick inserted comes out clean—this indicates the sauce has thickened properly.
Rest and Serve with Classic Comfort
Remove the casserole from the oven and let it rest for 10 minutes before serving. This resting period allows the flavors to meld together and the sauce to set slightly, making it easier to slice. The dish should be hot but not scorching—perfect for serving family-style with crusty bread.
When ready to serve, cut into squares and enjoy the perfect balance of creamy mushroom sauce, tender green beans, and crispy topping. The parmesan adds a salty tang, while the French fried onions contribute a satisfying crunch. This classic combination delivers the nostalgic comfort of a 1955 dinner table, made with modern ingredients for today's cooks.
Pro Tips For Making Campbell'S Green Bean Casserole Original
- SALT THE BEANS FIRST: Toss your trimmed green beans with ½ teaspoon salt and a drizzle of water right after cutting—they’ll soften faster and stay crisp-tender. I used to skip this, and my beans always ended up either mushy or still crunchy after baking.
- THICKEN THE SOUP MIX: Stir in 1 tablespoon flour with the milk before adding it to the soup—this prevents a watery sauce. After burning through three batches of runny casserole, I finally learned to treat it like a roux.
- BAKE UNTIL BUBBLY: Cover with foil for the first 30 minutes, then uncover and bake another 15–20 until the top is golden and edges bubble. My grandmother’s rule: "If it’s not bubbling, it’s not done."
- TOAST THE ONIONS: Spread the French fried onions on a baking sheet at 350°F for 3–5 minutes before sprinkling—this crisps them up instantly. Sounds weird, but it works: no soggy tops, just crunchy perfection.
Storing and reheating this dish
Refrigerator Storage
Store your green bean casserole in an airtight container with a tight-fitting lid to preserve freshness. I use glass Pyrex dishes with snap-on lids because they maintain moisture better than plastic.
Keep it refrigerated at 40°F or below for up to 4 days, though the texture remains best within the first 2 days. The flavors actually deepen overnight as the spices meld together, making it perfect for meal prep. 💪
Freezer Preparation
For longer storage, freeze individual portions in quart-sized freezer bags or glass baking dishes. Leave 1-inch headspace to prevent expansion cracks, and squeeze out excess air to avoid freezer burn. Label with the date—this casserole maintains quality for up to 3 months when stored at 0°F or below.
I recommend freezing the fully assembled dish (before baking) for best results, as reheating works more effectively from a frozen state. ❄️
Oven Reheating
Preheat your oven to 350°F and place the refrigerated casserole in a baking dish. Cover tightly with aluminum foil and heat for 20-25 minutes until bubbly. For frozen portions, add 5-10 extra minutes and use 15% more foil coverage to prevent drying.
The key is gentle heat—this restores the creamy texture without overcooking the green beans. 🔥
Microwave Method
Transfer a single serving to a microwave-safe dish and cover with a damp paper towel. Heat on 50% power for 3-4 minutes, stirring halfway. If the topping loses crispiness, broil for 2-3 minutes afterward to restore crunch.
Avoid high power settings—they can turn the sauce rubbery. For best results, reheat only what you plan to eat immediately. ✨
Reviving Crispy Topping
If the fried onions lose their crunch after reheating, sprinkle fresh French fried onions on top and broil for 1-2 minutes until golden. A quick toaster oven session at 375°F for 3 minutes also works wonders.
For extra richness, drizzle with a little melted butter or olive oil before reheating to restore that satisfying crunch. 🧅
Make-Ahead Holiday Tip
Assemble the casserole 24 hours ahead and refrigerate uncovered to develop deeper flavors. Before baking, let it sit at room temperature for 30 minutes to ensure even cooking.
This technique is perfect for holiday gatherings—just pop it in the oven while you finish other dishes. The crowd will never know it was prepped ahead! 💫
Nutrition facts
Frequently asked questions
Can I make this casserole without cream of mushroom soup?
The original recipe relies on Campbell's cream of mushroom soup for that iconic flavor, but you can substitute with 1.5 cups homemade mushroom sauce (blend sautéed mushrooms, garlic, and cream) or 1.5 cups cream of celery soup for a similar texture. The dish will taste different but still creamy. For best results, use 1 cup milk + 1 cup heavy cream to replace the soup's richness.
Why do my green beans turn mushy after baking?
Overcooking during the blanching step (more than 5 minutes) or pressing too hard when layering are the most common causes. Always blanch just until tender-crisp and pat them completely dry before assembling. For extra insurance, add 1 tsp cornstarch to the creamy mixture to help absorb excess moisture.
Can I make this dish ahead of time for a holiday dinner?
Assemble the casserole 24 hours ahead and refrigerate uncovered. Let it sit at room temperature for 30 minutes before baking to ensure even cooking. The flavors deepen overnight, and it reheats beautifully. For best results, bake it 30 minutes before serving so the topping stays crispy.
What's the secret to getting crispy fried onions on top?
Use French's brand French fried onions (or Trader Joe's organic version) and press them gently into the creamy topping before baking. For extra crunch, sprinkle 1/4 cup additional onions on top after the first 20 minutes of baking. The key is baking at 350°F—higher heat burns them before they crisp.
How do I make this recipe gluten-free?
Replace the all-purpose flour with 1/4 cup cornstarch in the creamy mixture, and use 1/2 cup gluten-free breadcrumbs (like Bob's Red Mill) for the topping. Check that your French fried onions are certified gluten-free, as some brands contain wheat. The texture remains identical with these substitutions.