This classic Campbell’s Green Bean Casserole is the ultimate comfort food side dish. For decades, it has been a non-negotiable staple on holiday tables, especially for Thanksgiving. Its creamy texture, savory flavor, and that iconic crunchy onion topping make it a crowd-pleaser every single time. We’re diving into the original recipe, perfected with simple tips to ensure it’s the best you’ve ever made. Forget complicated sides; this dish is beloved for its straightforward simplicity and delicious, reliable results.
Why You’ll Love This Classic Green Bean Casserole
There’s a reason this recipe has stood the test of time. It’s incredibly easy to assemble, requiring just a few pantry staples and about 10 minutes of prep time. This Campbell’s Green Bean Casserole is the definition of a “mix, bake, and serve” dish, making it perfect for busy cooks, especially during the holidays when oven space is prime real estate. It’s a comforting, nostalgic dish that brings everyone together.
The Simple Ingredients You’ll Need
The beauty of this recipe is its simplicity. You only need a handful of core ingredients to create this classic side dish.
- Campbell’s Cream of Mushroom Soup: This is the heart of the casserole, creating that signature creamy sauce.
- Milk: Used to thin the soup into the perfect sauce consistency.
- Soy Sauce: Adds a surprising depth of savory, umami flavor that balances the creaminess.
- Black Pepper: A dash of pepper is all you need for seasoning.
- Canned Green Beans: Two cans of cut green beans, drained well, are the traditional choice for convenience.
- French’s French Fried Onions: The essential crunchy topping. Part of them get mixed into the casserole for flavor and texture throughout.

How to Make Campbell’s Green Bean Casserole Step-by-Step
Making this dish is as simple as 1-2-3. Follow these steps for perfect results.
- Preheat and Prepare: First, preheat your oven to 350°F (175°C). While it heats up, grab a 1.5-quart casserole dish.
- Mix the Sauce: In the casserole dish, stir the Campbell’s Cream of Mushroom Soup, milk, soy sauce, and black pepper together until well combined and smooth.
- Add the Stars: Gently fold in the drained green beans and 2/3 cup of the French fried onions. Stir until everything is evenly coated in the creamy sauce.
- Bake to Perfection: Bake the casserole uncovered for 25 minutes, or until the edges are hot and bubbly.
- Add the Final Crunch: Remove the casserole from the oven and top it with the remaining 2/3 cup of French fried onions. Return it to the oven for another 5 minutes, just until the onions are golden brown and crispy. Let it stand for a few minutes before serving.
This casserole is a star on its own, but it truly shines alongside a holiday feast. If you’re planning your menu, consider pairing it with a juicy Crock Pot Turkey Breast for a truly unforgettable meal.
Tips for the Best Green Bean Casserole
While this recipe is nearly foolproof, a few simple tips can elevate it from great to absolutely perfect.
- Don’t Overmix: Stir the ingredients until just combined. Overmixing can break down the green beans, making the casserole mushy.
- Drain Green Beans Well: Excess water from the canned green beans can make your sauce thin and watery. Pat them dry for the best texture.
- Fresh is Best: For the crunchiest topping, use a fresh container of French fried onions. Stale onions won’t crisp up as nicely in the oven.

Fun Variations and Add-Ins
Want to customize your Campbell’s Green Bean Casserole? It’s incredibly versatile! Here are a few popular ideas to get you started:
- Add Cheese: Stir in 1/2 cup of shredded cheddar, mozzarella, or Monterey Jack cheese with the green beans for an extra gooey casserole.
- Bring on the Bacon: Add 1/2 cup of cooked, crumbled bacon for a smoky, salty kick.
- Mushroom Lover’s Dream: For more mushroom flavor, sauté 8 ounces of fresh sliced mushrooms and add them to the mix.
- Change the Soup: Not a fan of mushrooms? Campbell’s Cream of Chicken or Cream of Cheddar soup works wonderfully as a substitute.
While you’re planning your holiday sides, don’t forget another classic crowd-pleaser. This classic sweet potato casserole is the perfect sweet and savory complement to this creamy dish.
Make-Ahead and Storage Instructions
One of the best things about this casserole is that it can be prepped in advance, saving you time on a busy cooking day.
- To Make Ahead: Assemble the entire casserole as directed, but leave off the final layer of French fried onions. Cover tightly with foil and refrigerate for up to 24 hours. When ready to bake, add about 5-10 extra minutes to the initial baking time, then top with onions and bake for the final 5 minutes as directed.
- To Store Leftovers: Cover any leftover casserole and store it in the refrigerator for up to 3 days.
- To Reheat: The best way to reheat green bean casserole is in the oven at 350°F until warmed through. You can also microwave individual portions, but the topping won’t be as crispy.
Planning a full spread of appetizers before the main event? Check out this list of perfect Thanksgiving bite-sized appetizers to get your party started.
Frequently Asked Questions
Yes! You can assemble the casserole up to 24 hours in advance. Just combine all ingredients except for the final onion topping, cover, and refrigerate. Add a few extra minutes to the initial baking time before adding the topping as directed.
Absolutely. If using fresh green beans, trim them and blanch them in boiling water for 5 minutes before adding them to the casserole. If using frozen green beans, thaw them completely and pat them dry to remove excess moisture before mixing them in.
For a cheesy version, simply stir in 1/2 to 1 cup of your favorite shredded cheese, such as sharp cheddar or Monterey Jack, when you mix the green beans and soup together. Bake as directed.
Store any leftovers in an airtight container in the refrigerator for up to 3 days. To reheat, place the casserole in an oven-safe dish and bake at 350°F (175°C) for 15-20 minutes, or until warmed through. This helps keep the onion topping crispy.
If you’re not a fan of mushrooms, you can easily substitute Campbell’s Cream of Chicken, Cream of Celery, or Cream of Cheddar soup. They all work beautifully and create a delicious, creamy sauce.
Share Your Creations!
This Campbell’s Green Bean Casserole is more than just a recipe; it’s a tradition. We hope this guide helps you make the perfect version for your next family gathering. If you loved it, please leave a comment below or share a photo of your masterpiece on Pinterest! We can’t wait to see it.

Campbell’s Green Bean Casserole Recipe

Campbell's Green Bean Casserole: The Easiest, Creamiest Recipe
Ingredients
Equipment
Method
- Preheat oven to 350°F. In a 1.5-quart casserole dish, mix the cream of mushroom soup, milk, soy sauce, and black pepper until smooth.
- Stir in the drained green beans and 2/3 cup of the French fried onions.
- Bake for 25 minutes or until the casserole is hot and bubbling around the edges.
- Stir the casserole and top with the remaining 2/3 cup of onions. Bake for an additional 5 minutes until the onions are golden brown.
Notes
Storage: Store leftovers in an airtight container in the refrigerator for up to 3 days.