Green bean casserole is a classic comfort dish that’s a staple at holiday tables and large family gatherings. Its creamy, crispy topping and tender green beans make it a crowd-pleaser, especially when prepared in large quantities. This recipe is designed to serve approximately 75 people, ensuring everyone gets a generous portion of this beloved dish.
Ingredients
- 10 lbs fresh green beans, trimmed and cut into 2-inch pieces
- 4 quarts (128 oz) cream of mushroom soup (condensed)
- 3 cups whole milk
- 4 cups French fried onions, divided
- 2 cups grated cheddar cheese (optional)
- 1/2 cup unsalted butter (for topping)
- 2 cups sliced mushrooms (optional, for added flavor)
- Salt and freshly ground black pepper to taste
- Cooking spray or butter for greasing pans
Instructions
- Preheat your oven to 350°F (175°C). Prepare large baking dishes or pans—either 3-4 large 9×13-inch pans or equivalent large casserole dishes—by greasing them with butter or cooking spray.
- Blanch the green beans: Bring a large pot of salted water to a boil. Add the green beans and cook for 3-4 minutes until tender-crisp. Drain and immediately transfer to a bowl of ice water to stop the cooking process. Drain thoroughly and set aside.
- In a large mixing bowl, combine the condensed cream of mushroom soup, whole milk, and half of the French fried onions. Mix well until smooth. If using cheese, add it to the mixture and stir to combine.
- Add the blanched green beans to the soup mixture, stirring gently to coat evenly. Season with salt and pepper to taste. If adding sautéed mushrooms, fold them in at this stage.
- Divide the mixture evenly among the prepared baking dishes. Spread out to ensure even layers.
- In a small saucepan, melt the butter over medium heat. Once melted, pour over the remaining French fried onions to coat. Sprinkle this evenly over the top of each casserole.
- Place the casseroles in the oven and bake uncovered for 25-30 minutes, or until bubbling around the edges and the topping is golden brown.
- Remove from oven, let sit for 5 minutes to set, then serve hot. Garnish with additional fried onions if desired for extra crunch.
Tips
- Substitutions: Use frozen green beans if fresh aren’t available; just thaw and drain thoroughly before mixing. For a dairy-free version, substitute cream of mushroom with a mushroom-based cashew cream or a dairy-free soup.
- Storage: Leftovers can be stored in airtight containers in the refrigerator for up to 3 days. Reheat in a preheated oven at 350°F for 15-20 minutes or until hot, or microwave in short bursts, stirring occasionally.
- Prevent sogginess: Do not overbake, as this can make the casserole watery. Also, ensure the green beans are well-drained after blanching.
- For crispier topping: Broil the casserole for 1-2 minutes at the end of baking, watching carefully to prevent burning.
Serving Suggestions
This green bean casserole pairs beautifully with roasted turkey, ham, or beef for a complete holiday or large family meal. Serve alongside mashed potatoes, stuffing, and a fresh salad for a balanced spread. It also works well as a side dish for potlucks and buffet-style dinners, where its creamy texture and crispy topping will be appreciated by all.
Variations
- Cheesy Green Bean Casserole: Mix shredded cheddar or Monterey Jack cheese into the soup mixture for extra richness.
- Vegetarian Version: Skip the mushrooms and cheese or substitute with plant-based alternatives. Use plant-based cream of mushroom soup and vegan fried onions.
- Spicy Twist: Add a pinch of cayenne pepper or hot sauce to the soup mixture for a spicy kick.
- Additional Vegetables: Incorporate sautéed sliced carrots or mushrooms for more texture and flavor diversity.
Storage and Reheating
Leftover green bean casserole can be stored in airtight containers in the refrigerator for up to 3 days. To reheat, cover the dish with foil and bake at 350°F for 15-20 minutes until steaming hot. For quicker reheating, microwave individual portions in 1-2 minute intervals, stirring in between to ensure even heating. If you want to restore some crispiness to the topping, place the casserole under the broiler for 1-2 minutes, but watch carefully to prevent burning. Avoid freezing this dish, as the texture may become watery upon thawing and reheating.
Frequently Asked Questions
Can I prepare this casserole in advance?
Yes, you can assemble the casserole a day ahead. Cover it tightly with plastic wrap and refrigerate. When ready to serve, bake it at 350°F for about 30 minutes or until heated through and bubbly. Just add the fried onion topping during the last 5 minutes of baking to keep it crispy.
Is it okay to use frozen green beans?
Absolutely. Thaw the frozen green beans completely and drain any excess water before mixing. Blanching is not necessary if they are already cooked, but a quick blanch helps maintain texture and color. Adjust cooking times if using frozen to prevent overcooking.
What if I don’t have French fried onions?
You can substitute with crushed potato chips, crispy fried shallots, or even toasted breadcrumbs mixed with a little melted butter. These alternatives will add a similar crispy topping, but fried onions are the traditional choice for authentic flavor.
How do I ensure the casserole doesn’t become watery?
Drain the green beans thoroughly after blanching and avoid overmixing the ingredients. Also, do not overbake—baking until just bubbly and golden on top helps maintain the right consistency. If needed, you can thicken the mixture with a small amount of cornstarch slurry before baking.
Can I make this dish gluten-free?
Yes. Use gluten-free cream of mushroom soup and gluten-free fried onions or substitute with toasted gluten-free bread crumbs mixed with herbs and butter for the topping. Always check labels to ensure ingredients are gluten-free.
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What is the best way to serve this for a large crowd?
Prepare multiple large casseroles and keep them warm in a low-temperature oven until service. Using chafing dishes or warming trays helps to keep the casserole hot and ready to serve throughout the event. Providing serving utensils and ensuring easy access encourages guests to help themselves efficiently.
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