Name: Twice the Onion Green Bean Casserole
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Cuisine: American
Ingredients: 2 tablespoons unsalted butter; 1 medium onion, diced; 3 cloves garlic, minced; 1 teaspoon kosher salt; 1/2 teaspoon ground black pepper; 1/4 teaspoon ground nutmeg; 1/4 cup all-purpose flour; 2 cups whole milk; 1 cup chicken stock; 2 (12-ounce) packages frozen French-style green beans, thawed; 2 (6-ounce) cans French fried onions, divided

Why You’ll Love This Recipe

This version elevates the traditional green bean casserole by adding twice the French fried onions — once baked inside the casserole and again on top for an irresistible crunch. It’s simple to prepare, crowd‑pleasing, and perfect for holiday dinners or cozy weeknight meals.

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 pepper
2 6‑ounce cans French fried onions

Directions

Preheat your oven to 350°F (175°C).
Prepare the frozen green beans according to package directions — microwave or cook until tender.
In a 9″ x 13″ baking dish, stir together the cream of mushroom soup, milk, soy sauce, and pepper until smooth.
Add the prepared green beans and one can of French fried onions to the casserole dish and stir gently to combine.
Bake for about 25 minutes, or until the mixture is bubbly.
Remove from the oven, sprinkle the second can of French fried onions evenly over the top, and bake an additional 5 minutes until the onions are golden and crisp.

Servings and timing

Servings: 10
Prep time: 5 minutes
Cook time: 25 minutes (+ 5 minutes for topping)
Total time: 30 minutes

Variations

• Add cheese: Sprinkle shredded cheddar over the top before the final bake for a cheesy twist.
• Fresh beans: Use blanched fresh green beans instead of frozen for a more vibrant texture.
• Mushroom upgrade: Stir in sautéed mushrooms and garlic to deepen the savory flavor.
• Herb boost: Add a teaspoon of fresh thyme or rosemary for extra aroma.

Storage/Reheating

• Refrigerator: Store leftovers in an airtight container for up to 3–4 days.
• Reheat: Warm in the oven at 350°F (175°C) until heated through, about 15–20 minutes.
• Freeze: You can freeze the baked casserole (without the crispy onions on top) for up to 2 months. Thaw overnight in the fridge and add fresh fried onions before reheating.

FAQs

What makes this green bean casserole “twice the onion”?

It uses two full cans of French fried onions — one baked into the casserole and one added on top for extra crunch.

Can I use fresh green beans instead of frozen?

Yes, you can use fresh green beans. Blanch them first to ensure they’re tender before mixing into the casserole.

Do I have to use cream of mushroom soup?

Cream of mushroom soup gives the classic flavor, but you can substitute cream of chicken or a homemade mushroom sauce if preferred.

Can this casserole be made ahead of time?

Yes, you can assemble it through step 4, refrigerate, and then bake when ready. Add the second can of onions just before the final bake.

How do I keep the fried onions crispy?

Add the second can of fried onions toward the end of baking to prevent them from going soggy.

Is this recipe good for holidays?

Absolutely — it’s a classic holiday side dish with a fun twist that’s great for Thanksgiving or Christmas.

Can I make this casserole vegetarian?

Yes, it’s already vegetarian if the French fried onions and cream soup are vegetarian‑friendly.

What’s a good side to serve with this casserole?

It pairs well with roasted turkey, ham, mashed potatoes, and other holiday mains.

Can I add other vegetables?

You can mix in mushrooms, sliced carrots, or celery for additional texture and flavor.

How can I make it gluten‑free?

Use gluten‑free cream soup and gluten‑free fried onions.

Conclusion

Twice the Onion Green Bean Casserole is a delicious upgrade to the traditional classic, delivering extra onion crunch and classic comfort flavors with minimal effort. Whether you’re serving it at a holiday feast or a family dinner, it’s sure to be a hit.

Twice the Onion Green Bean Casserole