There’s something truly comforting about a hearty green bean casserole. This dish takes me back to family gatherings where the aroma filled the air, mingling with laughter and chatter around the dining table. The rich, creamy texture of the casserole, topped with a golden layer of crispy fried onions, makes it a staple for holidays and everyday meals alike. Plus, it only takes about one hour to prepare and serve, making it a straightforward dish to whip up for any occasion.
What sets this casserole apart is its velvety blend of green beans and a flavorful cream sauce, accentuated by the satisfying crunch of fried onions. This dish caters perfectly to both traditionalists seeking nostalgia and newcomers eager to indulge in a crowd-pleaser. From potlucks to family dinners, it’s simply the perfect side that complements a range of main courses, including roasted meats and savory pies.
Why you’ll love green bean casserole
- Quick and easy to prepare for any occasion
- Rich, creamy flavor paired with crispy texture
- Budget-friendly with pantry staples
- Make-ahead option for hassle-free gatherings
- Freezer-friendly for later enjoyment
“Tastes incredible and so simple to make.”
Step-by-step overview
Green bean casserole comes together in just a few simple steps. First, preheat your oven, then mix all the ingredients in a bowl. Spread the mixture into a casserole dish and bake until bubbly. After adding the fried onions, complete with a second bake for extra crunch.
What ingredients do I need for green bean casserole?
- 2 cans (14.5 oz each) green beans, drained
- 1 can (10.5 oz) cream of mushroom soup
- 1/2 cup milk
- 1 1/2 cups French’s crispy fried onions
- Salt and pepper to taste
Ingredient notes & swaps
- Green beans: Use fresh or frozen if preferred, though canned offers quick convenience.
- Cream of mushroom soup: Substitute with your favorite cream soup for different flavors.
- Fried onions: Homemade versions can add a unique touch and freshness.
- Milk: You can switch to any plant-based milk if dairy-free options are needed.
How do I make green bean casserole step-by-step?
Making this classic dish is straightforward. Start by mixing everything in a bowl and bake until bubbly. Here’s how to do it:
- Preheat the oven to 350°F (175°C).
- In a large bowl, combine the green beans, cream of mushroom soup, milk, salt, and pepper.
- Spread the mixture into a 1.5-quart casserole dish.
- Bake for 30 minutes in the preheated oven until heated through.
- Remove from the oven and stir in 1 cup of the crispy fried onions.
- Top with the remaining fried onions and bake for an additional 10 minutes, or until the onions are golden brown.
- Serve warm.
Pro Tip: If you prefer a bit more crunch, consider adding extra crispy fried onions right before serving.

Helpful cooking tips
- Prepare all your ingredients ahead of time for seamless assembly.
- Use a 1.5-quart dish to ensure even cooking and proper heating through.
- Watch the casserole closely during the final bake to avoid over-browning the onions.
- If you like a creamy consistency, you can adjust the milk quantity as needed.
How should I serve it?
Serve your green bean casserole warm alongside roasted chicken or turkey for a classic combination. It pairs wonderfully with mashed potatoes and gravy. Consider garnishing with fresh herbs, like parsley, for a pop of color and flavor. For a more casual look, you can serve it straight from the casserole dish to the table.
Can I make it ahead? How do I store and reheat it?
You can prepare the mixture a day in advance and bake just before serving. Store it in the refrigerator for up to two days. For longer storage, it can also be frozen before baking. When reheating, ensure it’s heated thoroughly through steaming, especially if it’s been stored in the fridge.
How do I fix common issues?
If your casserole turns out dry, consider adding a splash more milk when mixing or serving. For bland flavor, season more with salt and pepper to enhance the dish, as cream of mushroom soup can vary in saltiness. If it appears overcooked, cover it with foil during baking or reduce baking time slightly in future attempts.
What variations can I try?
You can easily customize your casserole by adding cooked bacon for a smoky flavor, or mixing in sautéed onions and garlic for added depth. For a healthier twist, consider incorporating some steamed broccoli or shredded carrots into the mix. These additions are optional but can brighten up the dish.
FAQs
Can I use fresh green beans instead of canned?
Yes, fresh green beans can be a great substitution for canned. Just blanch them before adding to the casserole for the best texture.
How can I make it vegetarian?
This recipe is inherently vegetarian if you use vegetable broth instead of chicken broth and check the soup label for compatibility.
Can I use low-fat milk?
Absolutely! Using low-fat milk will still provide the creamy texture you’re looking for, though whole milk may enhance the richness.
How long can I store leftovers?
You can refrigerate leftovers for about three to four days. Just ensure they are well-covered to maintain freshness.
What else can I use instead of cream of mushroom soup?
You can use cream of chicken soup or make your homemade version using flour, butter, and vegetable or chicken broth to mimic the creamy base.

Green Bean Casserole
Ingredients
Method
- Preheat the oven to 350°F (175°C).
- In a large bowl, combine the green beans, cream of mushroom soup, milk, salt, and pepper.
- Spread the mixture into a 1.5-quart casserole dish.
- Bake for 30 minutes in the preheated oven until heated through.
- Remove from the oven and stir in 1 cup of the crispy fried onions.
- Top with the remaining fried onions and bake for an additional 10 minutes, or until the onions are golden brown.
- Serve warm.