How To Reheat Green Bean Casserole

How to Reheat Green Bean Casserole: Complete Guide

Last Updated on June 18, 2024 by Shari Mason

Last night, my family and I indulged in a delicious green bean casserole for our dinner. The dish was delightfully flavorful and had a crispy texture. But what do you do if there are leftovers and you’re longing for it again?

I’ll share how to reheat a green bean casserole without becoming a mushy mess. 

Reheating food can be tricky, but with the right method, we can enjoy that creamy, crispy dish all over again. Read on.

5 Possible Ways To Reheat Your Green Bean Casserole

Green Bean Casserole

1. Oven Method

Begin by letting your casserole sit at room temperature for 20-45 minutes. While it’s resting, preheat your oven to 350°F (175°C). 

Cover your oven-safe dish with aluminum foil to avoid overcooking the topping. Place it in the oven for 20 minutes. 

“Reheating a green bean casserole is like giving it a second chance to shine, and with the right method, you’ll savor every crispy, creamy bite.”

Eat Pallet Restaurant & Food Advice

If you want extra crispiness, add more French fried onions or cheese on top after the initial 20 minutes. 

Take off the foil and bake for 5-10 minutes to achieve a delightful crispy top. Make sure it’s heated all the way through, then serve promptly.

2. Slow Cooker Method

Put your casserole in a slow cooker for a slow and steady approach. Cook it on a low heat setting for 2-3 hours, stirring occasionally to ensure even warming. 

Bring back the crisp texture of the onion [1] topping by moving it to an oven-safe dish and broiling for 2-3 minutes, watching closely to avoid burning. Serve once it reaches your preferred level of warmth.

Check out these simple dishes that go well with green bean casserole here.

3. Reheating It Through Microwave

When you’re in a hurry, the microwave can rescue you. Cover your green bean casserole in a microwave-safe bowl or dish and heat for 2-3 minutes, depending on the portion size. 

Use medium power and medium heat settings, and remember to stir halfway through. Be careful of hot steam when removing it.

But how can you dehydrate green beans?

4. Skillet Method

Grab a skillet and set it over medium heat if you prefer stovetop reheating. Add your desired amount of green bean casserole to the skillet. 

Consider incorporating a splash of water, broth, or even mushroom soup to prevent it from drying out. 

Stir occasionally and heat for 5-10 minutes, ensuring every bite is warmed. Once it’s heated to perfection, allow it to cool briefly before serving immediately. 

Read: What Causes Green Beans To Create Sparks In The Microwave?

5. Try To Reheat It Using Air Fryer

For a speedy and crunchy result, employ your air fryer. Begin by preheating it to a crispy 375°F (190°C). 

Place your green bean casserole in a heat-safe dish that doesn’t touch the heating element. Let it air fry for six to eight minutes, remembering to give it a good stir halfway through. 

This method efficiently reheats your casserole and rejuvenates the coveted crispiness of the topping. 

It’s a fantastic choice when craving that delightful crunch without sacrificing convenience.

Also Read: A Guide For Making Martha Stewart’s Sweet Potato Casserole

How Long Does Green Bean Casserole Remain Fresh In The Fridge?

Homemade Green Bean Casserole

Green bean casserole can stay fresh in the fridge for 3-4 days. Wrapping the casserole tightly with heavy-duty aluminum foil or freezer wrap is crucial to maximize its freshness. 

Another option is to place it in an airtight container, preventing moisture loss and preserving the original flavor.

If you need to store it more extended, consider freezing it. When properly stored in the freezer, your green bean casserole can remain in good condition for up to 6 months.

How Can You Avoid Green Bean Casserole From Getting Soggy?

To avoid a watery outcome, ensure your green bean casserole boasts a thick sauce that coats the green beans, steering clear of a soupy texture.

One common culprit behind a soggy casserole is not using enough thickener in your sauce, such as flour or cornstarch.

“I wonder if there is a person on Earth who is consoled by a casserole.”

Katja Millay, Author

Use the recommended amount of thickening agent in your recipe to prevent this when making the sauce. 

Usually, this process entails combining flour or cornstarch [2] with butter or oil to form a roux, establishing the base for a creamy sauce.


Can I prepare a green bean casserole in advance and reheat it?

Yes, you can prepare green bean casserole in advance, and it’s highly recommended, especially for holiday meals. 

Prepare it up to 48 hours in advance and reheat it when you’re ready to serve.

How long can a green bean casserole sit out once it’s made?

A green bean casserole should not sit at room temperature for 2 hours. After this time, it’s best to refrigerate it promptly to prevent any potential food safety issues. 

Find out how you can green beans without using a pressure cooker here.

How many times can I reheat a casserole in the oven?

A casserole can be safely reheated multiple times in the oven if you follow proper food safety guidelines. 

Each time you reheat it, ensure it reaches an internal temperature of at least 350°F to ensure it’s safe to eat. 

But how can you freeze green beans without blanching?

On A Final Note

Reheating green bean casserole can be a breeze when you follow the right methods. 

With that, I’ve shared five effective approaches: the oven method, slow cooker method, microwave reheating, air fryer reheating, and skillet method. 

Each method offers a unique way to bring back the casserole’s delightful flavors. 

Remember that green bean casserole remains fresh in the fridge for about 3-4 days, and you can extend its lifespan by freezing it for up to 6 months. 

To avoid the dreaded sogginess, ensure your sauce has the proper thickener, such as flour or cornstarch. 


Shari Mason

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