There’s nothing more comforting than a warm, bubbling dish of Green Bean Casserole. This easy version is made with canned green beans, cream of mushroom soup, and crispy fried onions for the ultimate holiday side dish. It’s quick to prepare and pairs beautifully with traditional Thanksgiving sides, like mashed potatoes and cheesy garlic dinner rolls!

Green Bean Casserole in a white baking dish.

Why You’ll Love This Recipe

This casserole has everything you want in a side dish: creamy mushroom sauce, tender green beans, and the perfect crunchy topping of golden fried onions. It’s a tried-and-true recipe that always makes an appearance on Thanksgiving tables, but it’s simple enough to serve any time of the year. Plus, since it uses pantry staples, you can whip it up in minutes without any fuss.

Tips for the Best Green Bean Casserole

Drain the beans well: Too much liquid can make the casserole watery, so be sure to drain the canned green beans before mixing.
Use fresh onions for extra crunch: The classic recipe calls for French fried onions, but you can also add some thinly sliced sautéed onions to boost the flavor.
Make it ahead: Assemble the casserole (without the topping), cover tightly, and refrigerate for up to 24 hours. When ready to serve, add the fried onions and bake.
Double it for a crowd: This recipe easily doubles and fits perfectly in a 9×13-inch baking dish for larger gatherings.

Variations

Want to change things up? Here are a few tasty twists:

Cheesy casserole: Stir in 1 cup of shredded cheddar cheese before baking.
From scratch: Swap the canned soup for a homemade mushroom cream sauce.
Extra veggies: Add sautéed mushrooms or chopped bell peppers for more texture and flavor.
Fresh green beans: Blanch fresh green beans instead of using canned for a crisp-tender bite.

Storage and Reheating

Store leftovers in an airtight container in the refrigerator for up to 3 days. To reheat, bake in the oven at 350°F until warmed through, or use the microwave for quick individual servings. For best results, re-crisp the onions in the oven.

Green Bean Casserole

Prep Time 10

Cook Time 35

Total Time 45

Classic Green Bean Casserole made with canned green beans, cream of mushroom soup, and crispy fried onions. A quick and easy side dish perfect for holidays or weeknight dinners!

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Ingredients

▢ 1 can (10.5 ounces) condensed cream of mushroom soup
▢ ½ cup whole milk
▢ 1 teaspoon soy sauce
▢ ¼ teaspoon kosher salt
▢ ¼ teaspoon ground black pepper
▢ 2 cans (14.5 ounces each) cut green beans, drained
▢ 1 cup French fried onions

Instructions

Preheat the oven to 350°F (175°C).
In a medium mixing bowl, combine cream of mushroom soup, whole milk, soy sauce, salt, and black pepper. Whisk until smooth.
Add the green beans and gently fold everything together until the green beans are evenly coated.
Transfer the mixture to a 1 ½-quart baking dish and spread it out evenly with a spatula.
Bake uncovered for 25 minutes, or until the mixture is hot and bubbling.
Carefully remove the dish from the oven and sprinkle the French fried onions evenly over the top.
Return the casserole to the oven and bake for an additional 5 to 10 minutes, or until the onions on top are golden brown and crispy.
Let the casserole rest for 5 minutes before serving.