Name: Twice the Onion Green Bean Casserole
Prep time: 5 min
Cook time: 30 min
Total time: 35 min
Cuisine: American
Ingredients: 4 (12‑ounce) bags frozen green beans; 2 (10.75‑ounce) cans cream of mushroom soup; 1 cup milk; 2 teaspoons soy sauce; 1/2 teaspoon ground black pepper; 2 (6‑ounce) cans French fried onions

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A timeless comfort dish gets an irresistible upgrade in this Twice the Onion Green Bean Casserole. I take the classic green bean casserole and double down on the crispy French fried onions, making each bite extra crunchy and flavorful. Creamy, savory, and full of texture, this dish is a holiday staple I keep coming back to—especially during Thanksgiving or cozy fall dinners.

Twice the Onion Green Bean Casserole

Ingredients

(Tip: You'll find the full list of ingredients and measurements in the recipe card below.)

4 (12‑ounce) bags frozen green beans

2 (10.75‑ounce) cans cream of mushroom soup

1 cup milk

2 teaspoons soy sauce

½ teaspoon ground black pepper

2 (6‑ounce) cans French fried onions

Directions

I preheat the oven to 350°F (175°C).

Then, I prepare the frozen green beans according to their package directions—either by microwaving or boiling.

In a 9×13‑inch baking dish, I mix the cream of mushroom soup, milk, soy sauce, and pepper until everything is smooth.

I stir in the green beans and one can of French fried onions, mixing gently to keep the onions somewhat crisp.

I bake the mixture for about 25 minutes, or until the casserole starts bubbling.

I remove the dish from the oven, sprinkle the second can of fried onions evenly on top, and return it to the oven.

I bake for an additional 5 minutes, just until the onions are golden and perfectly crispy.

Servings and timing

This recipe makes 10 generous servings.

Prep Time: 5 minutes

Cook Time: 30 minutes

Total Time: 35 minutes

Each serving has approximately 305 kcal.

Variations

I sometimes swap the cream of mushroom soup for cream of celery or even cream of chicken for a different flavor profile.

If I want to go fresh, I use trimmed fresh green beans and steam them until just tender.

For a more gourmet twist, I mix in sautéed mushrooms or caramelized onions into the base.

I occasionally add a pinch of garlic powder or smoked paprika to deepen the flavor.

To make it vegan, I use plant-based cream soup, non-dairy milk, and vegan crispy onions.

Storage/Reheating

I store leftovers in an airtight container in the fridge for up to 3 days. When reheating, I prefer using the oven at 350°F for about 10-15 minutes to help the onions stay crisp. If I’m in a rush, I microwave individual portions, but I know the topping will soften a bit. Freezing is possible, though I find the texture of the onions isn’t quite the same after thawing and reheating.

FAQs

How can I make this casserole in advance?

I assemble everything except the final layer of fried onions, cover it, and refrigerate for up to a day ahead. Just before baking, I add the second can of onions to keep them crisp.

Can I use fresh green beans instead of frozen?

Yes, I often blanch fresh green beans in boiling water for 4-5 minutes until they’re tender-crisp, then use them in place of frozen.

What can I use instead of cream of mushroom soup?

If I want to make it from scratch, I cook down mushrooms with butter and flour, then add milk or broth to create a homemade creamy base. Cream of celery or cream of chicken also work well.

How do I make this casserole gluten-free?

I make sure to use gluten-free cream soup and fried onions, which are available in many grocery stores or online. The rest of the ingredients are naturally gluten-free.

Can I halve the recipe?

Yes, I cut everything in half and use an 8x8 or 9x9-inch baking dish. The baking time stays nearly the same—just a few minutes less.

Conclusion

This Twice the Onion Green Bean Casserole is a crowd-pleasing side dish I always count on for big gatherings and holiday meals. It’s simple to make, full of classic flavors, and the extra crispy topping brings something special to the table. Whether I'm serving it alongside turkey or as part of a vegetarian feast, it never fails to disappear fast.

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Twice the Onion Green Bean Casserole

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Author: Cheryl
Total Time: 35 minutes
Yield: 10 servings
Diet: Vegetarian

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Description

Twice the Onion Green Bean Casserole is a delicious twist on the classic holiday side dish, featuring double the amount of crispy French fried onions for extra crunch and flavor. With a creamy mushroom base and tender green beans, it’s a comforting favorite perfect for Thanksgiving or cozy dinners.