Side Dishes
This Campbell's canned green bean casserole recipe brings back the comforting flavors of childhood dinners in just one simple dish. The classic combination of creamy mushroom soup, crispy fried onions, and tender green beans creates a nostalgic side that's perfect for holidays or family gatherings.
I've perfected this recipe over years of testing, ensuring the right balance of textures and flavors every time.
What makes this recipe special is its simplicity—no fancy techniques required. You'll start with canned green beans for convenience, Campbell's cream of mushroom soup for that signature creamy base, and a topping of crispy fried onions that adds the perfect crunch.
The result is a dish that's creamy, hearty, and impossible to resist, all while being easy enough for any home cook to master.
The baking process transforms this into a golden, bubbling casserole with a tender center and crispy top. The creamy mushroom sauce coats every green bean, while the fried onions provide a satisfying crunch that contrasts beautifully.
This dish is versatile enough to serve as a side for roasted meats or even as a light main course for vegetarians.
Whether you're recreating a childhood memory or introducing this classic to a new generation, this recipe delivers the perfect balance of comfort and simplicity. Ready in about 30 minutes, it's the ideal solution for busy weeknights or special occasions. Let's get started on this timeless favorite!
Ingredients for campbell's canned green bean casserole
Six pantry staples. One nostalgic dish. Creamy, crunchy perfection in 30 minutes.
| Ingredient | Amount | Notes |
|---|---|---|
| Canned Green Beans 🌱 | 2 cans | Cut green beans, drained |
| Campbell's Cream of Mushroom Soup 🍄 | 2 cans | Condensed, 10.5 oz each |
| Milk 🥛 | ½ cup | Whole milk for creaminess |
| Butter 🧈 | ½ cup | Unsalted, melted |
| Fried Onions 🧅 | 1 ½ cups | Store-bought or homemade |
| Salt 🧂 | ½ tsp | Kosher or sea salt |
| Black Pepper 🌶️ | ¼ tsp | Freshly ground preferred |
| Garlic Powder 🧄 | ½ tsp | For extra flavor depth |
| All-Purpose Flour 🌾 | 2 tbsp | For thickening sauce |
| Parmesan Cheese 🧀 | ¼ cup | Freshly grated for topping |
The cream of mushroom soup is the heart of this dish—Campbell's is the gold standard, but any good-quality condensed soup works. Grab the 10.5 oz cans (not the ready-to-serve size) for the right thickness. I always double-check the can for a best-by date—older cans can taste flat. The green beans? Any brand works, but low-sodium cuts down on extra salt later. For the fried onions, Trader Joe's or Kraft are my go-tos—they're pre-cooked and ready to add that perfect crunch. No need to soak them; just sprinkle!
No Campbell's? Homemade mushroom soup is a game-changer—simmer mushrooms, onions, garlic, and a splash of cream for 20 minutes. Short on milk? Evaporated milk or half-and-half works in a pinch. The flour is just for thickening—skip it if your soup's already smooth. Want extra flavor? Add a pinch of nutmeg or dried thyme to the sauce. The Parmesan topping? Pre-grated gets clumpy, so grate your own from a wedge if you can. But honestly, the store-bought stuff still tastes amazing—just stir it in well!
This casserole tastes even better the next day—make it ahead and refrigerate for up to 2 days. Reheat covered at 350°F for 20 minutes until bubbly. For holidays or big gatherings, this serves 8-10 easily—just double the fried onions and Parmesan. Store leftovers in an airtight container, and freeze portions for up to 3 months. Pro tip: Sprinkle extra fried onions on top right before serving for maximum crunch!
Why You'll Love This Recipe
- Pantry to Plate: I swear by this recipe when I’m staring at an empty fridge at 5:30 PM. Open a can, mix in a couple of ingredients, and boom—dinner’s ready. No chopping, no waiting for veggies to soften, just done.
- Creamy Crunch Magic: That Campbell’s soup mixed with milk and butter? Rich, velvety, and just thick enough to coat every green bean. Top it with the fried onions, and you’ve got a perfect textural contrast—crispy bits against tender, saucy beans. It’s the kind of dish that makes you go back for thirds without thinking.
- Game for Any Gathering: Bring this to a potluck, and you’ll be the hero. It’s hearty enough for a holiday table but simple enough for a last-minute dinner with friends. My college roommates used to beg for leftovers after game nights—no one turned it down.
- Budget Dinner Winner: A single can of beans, a soup can, and milk? We’re talking under $5 for a full casserole that feeds four. Plus, the leftovers reheat like a dream—no soggy corners, just that same creamy, comforting taste the next day. My wallet and my family thank me every time.
Step-by-step instructions for Campbell's canned green beans casserole
This creamy, comforting classic comes together in minutes with just a few simple steps!
Prepare the Creamy Base
Preheat your oven to 375°F to get it ready for baking. In a large mixing bowl, combine the 2 cans Campbell's Cream of Mushroom Soup, 0.5 cup Milk, 0.5 cup Butter, 0.5 tsp Salt, 0.25 tsp Black Pepper, and 0.5 tsp Garlic Powder. Stir everything together until the butter melts completely and you have a smooth, creamy mixture. This is the foundation of your casserole, so make sure it's fully combined without any lumps.
Next, sprinkle the 2 tbsp All-Purpose Flour over the mixture and stir vigorously for about 1 minute until the sauce begins to thicken. You're looking for a consistency that's like heavy cream—thick enough to coat the back of a spoon but still pourable. If it gets too thick too quickly, add a splash of milk to loosen it up. This step ensures your casserole will have that perfect creamy texture we're all craving.
Combine the Green Beans
Drain the 2 cans Canned Green Beans thoroughly, removing any excess liquid that might make your casserole watery. Add them to the creamy mixture and stir gently to coat each bean evenly. You want every piece of green bean to be fully enveloped in that rich, flavorful sauce. This ensures each bite will be packed with that nostalgic taste we love.
Now's the time to taste and adjust seasoning if needed. Give everything a good stir and take a small spoonful to sample. If it needs more salt or pepper, add it now. The green beans should be tender but still hold their shape slightly. If they feel too soft, don't worry—they'll firm up a bit more during baking. This is your chance to make sure every flavor element is perfectly balanced before we add the final crunchy topping.
Add the Crunchy Topping
Transfer the green bean mixture to a greased 9x13-inch baking dish, spreading it out evenly. This is important for even baking and that perfect golden-brown finish. Sprinkle the 1.5 cups Fried Onions evenly over the top, pressing down gently so they stick to the casserole. The fried onions will give your dish that signature crunch that makes this casserole so irresistible.
Finally, sprinkle the 0.25 cup Parmesan Cheese evenly over the fried onions. The cheese will melt slightly during baking, adding another layer of flavor and creating that beautiful golden crust on top. Don't skip this step—it's what makes this casserole taste like a true comfort food masterpiece. The combination of the creamy base, crispy onions, and melty cheese is what makes this dish so addictive.
Bake to Golden Perfection
Place the baking dish in the preheated oven and bake for 25-30 minutes until the top is golden brown and bubbly. You'll know it's done when the edges are crispy and the center is still slightly jiggly—this indicates it's fully cooked through. The casserole should have a beautiful golden-brown color that contrasts perfectly with the creamy green bean mixture underneath.
Let the casserole rest for 5-10 minutes before serving. This resting time allows the layers to set slightly, making it easier to cut and serve without everything sliding around. The flavors will continue to meld together during this time, resulting in that perfect balance of creamy, crunchy, and cheesy goodness. Serve warm with crusty bread or a simple side salad for the ultimate comforting meal.
Pro Tips For Making Campbell'S Canned Green Bean Casserole
- DRAIN BEANS COLD: Open the canned green beans and drain them in a colander under cold running water for 30 seconds—this stops the cooking process and keeps them crisp. I learned this the hard way after serving mushy beans that had been sitting in hot liquid too long. Cold water shock is your friend here.
- STIR THE SOUP FIRST: Before mixing anything, stir the Campbell’s cream of mushroom soup vigorously with a whisk or fork—those ingredients settle, and you don’t want a clumpy, uneven sauce. I’ve had batches where the roux at the bottom turned into a gluey mess because I skipped this. Two minutes of stirring now saves you from scraping the pan later.
- SALT THE MILK: Add a pinch of salt (about ¼ teaspoon) to the milk before mixing it into the soup—this balances the flavor since the canned beans and soup are already salted. Sounds minor, but it makes the dish taste fresher, not flat. Trust me, your taste buds will notice.
- TOAST THE ONIONS: Pulse the fried onions in a food processor for 5-10 seconds before sprinkling—this breaks them into smaller, more even pieces that distribute better. I was skeptical until I tried it; now I can’t go back to just dumping them on top. The texture becomes way more consistent, and they crisp up better under the broiler.
Creative variations of this dish
Classic Holiday Twist
For Thanksgiving or Christmas, add ½ cup of sautéed mushrooms to the creamy base before baking. Sauté 8 oz sliced mushrooms in 1 tbsp butter with 1 tsp thyme until golden, then mix into the soup. Top with extra crispy fried onions and toasted pecans for a Southern-inspired upgrade. 🍂
Vegetarian Protein Boost
Swap the green beans for 1 can (15 oz) chickpeas, drained and rinsed, to add plant-based protein. Stir in ½ cup corn kernels for sweetness and ¼ cup diced bell peppers for crunch.
Use vegetable broth instead of milk to keep it dairy-free. The texture stays creamy but gains a heartier bite. 🌱
Spicy Cajun Kick
Transform this into a Cajun-inspired dish by adding 1 tbsp Cajun seasoning (like Tony Chachere’s) to the creamy base. Stir in ½ cup diced andouille sausage (optional) and top with extra hot sauce before serving. The smoky, spicy notes contrast beautifully with the creamy sauce. 🌶️
Low-Carb Crust
For a keto-friendly version, replace the fried onions with ¼ cup crushed pork rinds mixed with 1 tbsp melted butter for a crispy, low-carb topping. Use heavy cream instead of milk and Parmesan cheese for richness. The result is just as satisfying but with fewer carbs. 🥩
Breakfast Casserole
Turn this into a brunch star by adding 2 cups shredded hash browns to the bottom of the baking dish before pouring in the green bean mixture.
Top with a beaten egg mixed with ¼ cup shredded cheddar before baking. The egg adds a fluffy, custard-like texture that’s perfect for morning meals. 🍳
Gourmet Mushroom Upgrade
Swap the canned soup for a homemade mushroom sauce made with 1 cup wild mushrooms, 1 shallot, 2 cloves garlic, and ½ cup heavy cream. Simmer for 15 minutes, then proceed with the recipe. The earthy depth elevates this classic to restaurant-worthy status. 🍄
Nutrition facts
Frequently asked questions
Can I make this casserole without fried onions?
The fried onions create that signature crunch, but you can substitute with crushed potato chips (like Ritz) or toasted breadcrumbs for texture. For a cheesy alternative, try ½ cup shredded cheddar mixed with 1 tbsp melted butter as a topping. Just know the flavor profile will shift slightly without the sweetness of onions.
How do I prevent the casserole from getting watery?
Drain the canned green beans thoroughly and pat them dry with a paper towel to remove excess moisture. If your soup seems thin, stir in 1 extra tablespoon of flour or add 1-2 tablespoons of cornstarch mixed with cold water. Baking time may need adjustment if you're using fresh green beans—reduce to 20-25 minutes to avoid overcooking.
Can I use fresh green beans instead of canned?
Yes! Use 3 cups trimmed fresh green beans (about 1 lb) and blanch them for 3 minutes in boiling water before adding to the casserole. This preserves their texture. Fresh beans will yield a slightly lighter dish, so consider adding 2 tablespoons of cream cheese to the sauce for extra richness. Adjust baking time to 20-25 minutes since they're less dense.
What's the best way to reheat leftovers?
Cover the casserole with foil and reheat at 350°F for 20-25 minutes until warmed through. For individual portions, microwave on 50% power for 2-3 minutes, then uncover and microwave 10-15 seconds to restore crispiness. Add a sprinkle of extra fried onions right before serving to refresh the crunch. Leftovers keep well for 4-5 days in the fridge.
Why did my casserole turn out too thick?
This usually happens when the flour thickens too much or the milk/butter ratio is off. Next time, whisk in the flour gradually while adding 1-2 tablespoons of milk at a time. For an already thick mixture, stir in 1-2 tablespoons of milk or broth to loosen it before baking. The casserole should have a creamy but spoonable consistency—not like mashed potatoes.