This Classic Green Bean Casserole Is Exactly How You Remember It — Only Better (2024)

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Patty Catalano

Patty Catalano

Patty is a recipe developer and food writer. She worked Alton Brown’s Research Coordinator and podcast producer and in the Oxmoor House test kitchen. She loves maple syrup, coffee and board games. Patty lives in Atlanta with her husband and two children.

published Nov 12, 2023

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This Classic Green Bean Casserole Is Exactly How You Remember It — Only Better (1)

Learn how to make the classic Thanksgiving side with fresh or canned green beans, a homemade mushroom cream sauce, and store-bought crispy onions.

Serves6 to 8Prep10 minutes to 20 minutesCook45 minutes to 55 minutes

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This Classic Green Bean Casserole Is Exactly How You Remember It — Only Better (2)

Classic Thanksgiving recipes tug at such a tender spot in our memories. It isn’t until the dish is on the table that we end up wishing it was just better. Green bean casserole is a prime example of a classic dish that can be improved upon, while honoring the nostalgic hold it has on us.

Green bean casserole is composed of three separate elements: the green beans, the mushroom cream sauce, and the crispy onion topping. The decision is yours when it comes to canned or fresh green beans — it’s really a matter of convenience and textural preference. Homemade mushroom cream sauce and those store-bought crispy onions are a must here, so I won’t try to convince you otherwise. Here’s how to put it all together to make the best classic green bean casserole.

What Ingredients Are in Green Bean Casserole?

  • Green beans: Blanch fresh green beans for a crisp-tender green bean texture or opt for three (about 15-ounce) cans of green beans for a softer bite.
  • Mushrooms: Browning sliced white button mushrooms in butter gives the creamy sauce its umami flavor. Substitute with baby portobello (cremini) mushrooms for an even deeper flavor.
  • Butter: Use unsalted butter for browning the mushrooms and garlic, and to toast the flour for thickening the sauce.
  • All-purpose flour: Cook the flour in butter as insurance against a lumpy gravy. Wait until it turns golden and smells toasty before adding the liquids.
  • Chicken or vegetable broth: Low-sodium broth is best for controlling the seasoning level (especially if you’re using canned green beans). It’s easy to keep the dish vegetarian by using low-sodium vegetable broth.
  • Milk: With so many rich dishes on the table, there’s no need for heavy cream here. Instead, opt for whole or 2% milk to give the mushroom sauce its creamy flavor.
  • Crispy fried onions: There’s no substitute for the classic crunch of store-bought crispy fried onions. One small (2.8-ounce) container is enough to cover the casserole.

Why Is My Green Bean Casserole Soggy?

Your mushroom cream sauce may be too thin if you have added more broth or milk than called for, if you have not simmered the sauce long enough, or if it was not cooked on the specified heat level. Luckily, this is an easy fix. Place the skillet with the sauce over medium-high heat and whisk frequently as it comes to a rapid boil. Continue whisking until the mixture “coats the back of a spoon.” This means if you dip a spoon into the sauce, you should be able to draw your finger through the sauce and a clean line should appear. If the sauce runs together, keep cooking until you’re able to do so.

How to Make Green Bean Casserole in Advance

It’s simple to prepare this classic green bean casserole in advance, whether you’re getting ready for the week ahead or are in the midst of holiday preparations. Assemble the casserole, but leave off the crispy onion topping. Cover and refrigerate the casserole for up to one day. Remove the casserole from the refrigerator while the oven heats. Sprinkle with the crispy onions, then bake, adding an additional 15 to 20 minutes to the original bake time. Make sure to check the onions towards the end of cooking, as you may need to cover with foil to prevent over-browning.

Comments

Green Bean Casserole Recipe

Learn how to make the classic Thanksgiving side with fresh or canned green beans, a homemade mushroom cream sauce, and store-bought crispy onions.

Prep time 10 minutes to 20 minutes

Cook time 45 minutes to 55 minutes

Serves 6 to 8

Nutritional Info

Ingredients

  • 1 1/2 pounds

    fresh green beans

  • 8 ounces

    white button mushrooms

  • 2

    cloves garlic

  • 4 tablespoons

    (1/2 stick) unsalted butter, plus more for the baking dish

  • 1 1/4 teaspoons

    kosher salt, plus more for blanching and as needed

  • 1/2 teaspoon

    freshly ground black pepper

  • 1/4 cup

    all-purpose flour

  • 1 cup

    low-sodium chicken or vegetable broth

  • 1 1/2 cups

    whole or 2% milk, or half-and-half

  • 1

    (2.8-ounce) container fried onions (about 1 1/2 cups), such as French’s Fried Onions

Instructions

  1. Bring a large pot of salted water to a boil over high heat. Meanwhile, prepare an ice bath by filling a large bowl halfway with ice and water. Arrange a rack in the middle of the oven and heat the oven to 350°F. Lightly coat a 9x13-inch or other 3-quart baking dish with unsalted butter.

  2. Trim the ends and cut 1 1/2 pounds green beans in half. Thinly slice 8 ounces white button mushrooms, halving first if the mushrooms are larger than 1 1/2-inches in diameter. Mince 2 garlic cloves.

  3. Add the green beans to the boiling water and cook until crisp-tender, about 4 minutes. Drain and transfer to the ice bath to stop the cooking. When cool, drain again and let sit in the colander while you make the sauce.

  4. Melt 4 tablespoons unsalted butter in a large skillet over medium-high heat. Add the mushrooms, 1 1/4 teaspoons kosher salt, and 1/2 teaspoon black pepper. Cook until the moisture is released and the mushrooms begin to brown, 5 to 7 minutes. Add the garlic and cook until fragrant, about 1 minute.

  5. Sprinkle 1/4 cup all-purpose flour evenly over the mushroom mixture and stir to combine. Cook until the flour is no longer dry and the film on the bottom of the pan turns golden, about 1 minute. Slowly whisk in 1 cup low-sodium chicken or vegetable broth, scraping the bottom of the pan.

  6. Add 1 1/2 cups whole or 2% milk, or half-and-half, and whisk to combine. Bring to a boil. Cook, whisking frequently, until the sauce thickens, 2 to 3 minutes. Remove the pan from the heat. Taste and season with more kosher salt as needed.

  7. Add the green beans and toss to coat in the sauce. Transfer the mixture to the baking dish, and spread into an even layer. (Alternatively, leave the mixture in the skillet if it is ovenproof, spread it into an even layer, and bake directly in the skillet.) Sprinkle evenly with 1 (2.8-ounce) container fried onions. Bake until the edges are bubbling and the onions are browned, 15 to 20 minutes.

Recipe Notes

Make ahead: Assemble the casserole without the onion topping, cover, and refrigerate up to 1 day ahead. Let the casserole sit at room temperature while the oven heats. Uncover and top with the fried onions. Bake for 30 to 40 minutes, covering the top with aluminum foil in the final 10 minutes if the onions brown too quickly.

Substitutions: 3 (about 15-ounce) cans green beans can be substituted for the fresh green beans. Drain well before adding to the mushroom sauce.

Storage: Leftovers can be refrigerated in an airtight container for up to 4 days.

Filed in:

Casserole

vegetarian

Vegetables

thanksgiving

winter

autumn

This Classic Green Bean Casserole Is Exactly How You Remember It — Only Better (2024)

FAQs

Which is better in green bean casserole canned or frozen? ›

Frozen French-cut green beans are a better option. They hold their texture better than canned, and you can cook them straight from their frozen state. And if you're using fresh green beans? You'll need to cook them first by roasting, steaming or boiling them.

Why is green bean casserole the best? ›

Green bean casserole was considered a perfect dish for holiday entertaining because it was simple, inexpensive, and could easily be made ahead of time. It became known as a "jiffy casserole" because it went from one bowl to one pan.

How do you keep green bean casserole from being soupy? ›

Mistake #5: A Runny Casserole

If you sense it's a little watery, "add a thickener like roux or starch to absorb the additional liquid or cook a little longer," she says. That'll give it that rich, dense consistency you're looking for.

What is the origin of green bean casserole? ›

Green Bean Casserole was created by a Campbell Soup Company employee, Dorcas Reilly, at our Camden, New Jersey headquarters in 1955. She was one of the first full-time members of Campbell's Home Economics department—now known as the Campbell Test Kitchen, where I work.

What tastes better canned or frozen green beans? ›

"Frozen beans hold their texture and flavor better when cooked, while canned beans can become mushy," says Lauren Allen, the owner and creator of recipe website Tastes Better From Scratch and an Amazon best-selling cookbook by the same name.

Why is my green bean casserole bland? ›

The Casserole Is Bland

Another one of the most common green bean casserole mistakes is to choose a recipe that's a bit too simple, which can result in a bland dish.

What makes green beans taste better? ›

I added some sliced onion sautéed along with the green beans, added some garlic paste from the tube (Gourmet Garden®), some freshly-ground black pepper, and a healthy sprinkle of lemon pepper. Wow, so simple and yet soooo delicious.

Can you leave green bean casserole out overnight? ›

“But you also need to remember cream pies and those creamy green bean and sweet potato casseroles can become dangerous if they sit out for too long without refrigeration, which needs to be below 41° F.”

Why do French cut green beans taste better? ›

The main different is the texture. Because French cut green beans are sliced so thinly they cook up silky and tender. The slicing also turns the veggie from a tube to a strip, which helps the beans absorb the flavors they're cooked with (more on that below).

Should green bean casserole be thick? ›

If you've ever cooked green bean casserole, you know its consistency should be thick and saucy, not thin and watery, as EatingWell points out. One common cause of a wet, soupy casserole is undercooking the vegetable ingredients on the stovetop.

Can you freeze green bean casserole? ›

Stored properly, your leftover green bean casserole will last 3-4 days in the fridge. Freezing: Wrap your green bean casserole tightly with heavy-duty aluminum foil, freezer wrap or transfer to an airtight container and keep in the freezer for 6 months.

What to eat with green bean casserole? ›

The best side dishes to serve with a green bean casserole are collard greens, corn on the cob, kielbasa, fried shrimp, spaghetti and meatballs, London broil, broccoli, caramelized onions, zucchini carrot bread, lentil loaf, Cajun turkey, roasted chicken, grilled steak, baked salmon, pork chops, Apple slaw and Christmas ...

Why do Americans eat green bean casserole? ›

Popularity. It was originally marketed as an everyday side dish but became popular for Thanksgiving dinners in the 1960s after Campbell's placed the recipe on the can's label. The recipe popularized the combination of the soup with green beans.

How good is green bean casserole in the fridge? ›

Allow the casserole to cool to room temperature, then cover tightly with storage wrap or transfer to an airtight container. Store in the refrigerator for up to four days.

How many days can you eat green bean casserole? ›

Arguably best made with canned green beans, a green bean casserole and other cooked casseroles will last four days in the fridge. Like with mashed potatoes, cooked casseroles are safe to eat out of the freezer, although quality will suffer, according to a food safety specialist at the USDA Meat and Poultry Hotline.

Is canned or frozen better? ›

Canned Foods

According to Dr. Surampudi, canning requires a lot more processing, and is likely to have less nutritional value than frozen foods. The process of canning is different for different types of food, but typically it involves three major steps that keep the food safe to eat for long periods of time.

Which is better frozen or canned green peas? ›

"When things are frozen, they are at the peak of ripeness," Derocha says, which means they'll retain much of their nutrients. Canned peas may contain added salt and lose a bit of their nutrients in the canning process, Petitpain says, but they are typically the most convenient.

Are frozen green beans better? ›

Fresh vs. Frozen Green Beans. You may be surprised to learn that frozen green beans have just as many nutrients as, if not more than, fresh green beans. That's because frozen produce is harvested at peak ripeness, blanched, and flash frozen to preserve most of the nutrients and prevent spoiling.

Do green beans lose nutrients when canned? ›

Vegetables including tomatoes, spinach, and green beans are some of the commonly canned vegetables that are rich in vitamin C. While the initial blanching process results in some vitamin C losses, the remaining vitamin C is preserved longer after canning.

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