The BEST Green Bean Casserole Recipe - Mom On Timeout (2024)

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The best Green Bean Casserole recipe made with tender green beans, savory mushrooms and a rich, homemade cream sauce all topped with a golden, crispy layer of fried onions – amazing! Such a delicious combination of flavors and textures that is perfect for the holidays!

Love green beans? Here are some more of our favorite ways to enjoy this delicious veggie: Garlic Green Beans, Slow Cooker Green Beans and our favorite Green Bean recipe!

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Green Bean Casserole Recipe

I think everyone has probably had Green Bean Casserole before but if you’re one of those that has traditionally made it with a can of cream soup, I challenge you to try this homemade version this year. It’s got the classic flavors you know and love with a homemade twist!

This green bean casserole from scratch is made with fresh mushrooms and a homemade cream sauce that takes maybe an extra 10 to 15 minutes but is so, SO worth it. Whether you’re serving it at a family dinner, holiday, or special event, this dish is sure to be a hit!

Why You’ll Love This Recipe

There is just something about casseroles that appeals to kids and adults and this recipe for Green Bean Casserole is no exception. Simple preparation, rich flavors, minimal ingredients and incredible texture.

  • Classic Comfort Food. We always say, if it starts with butter and onion, it’s going to be good! This dish is pure comfort food with familiar flavors that everyone will love.
  • Make Ahead. This is one of my favorite dishes to make ahead for the holidays. Simply assemble (leave off the fried onions) and refrigerate for up to 2 days. It’s so good!
  • Simple. This recipe uses easy to find ingredients to make a really delicious homemade recipe that will make your guests feel extra special this year.
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Thanksgiving Side Dish Round Up

This casserole is a staple in our Thanksgiving menu but here are some more of our favorite side dishes:

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5 SECRETS TO GETTINGDINNER ON THE TABLE...FAST!

  1. Mashed Potatoes
  2. Cornbread Stuffing
  3. Dinner Rolls
  4. Candied Yams
  5. Creamed Corn

Green Bean Casserole Ingredients

This dish is a delightful combination of tender green beans, savory mushrooms and a creamy, dreamy sauce. This casserole is topped with the traditional fried onions which add tremendous texture and flavor.

Let’s take a quick look at what you’ll need and as always, you can find the full printable recipe card at the end of this post. There are three main components to this recipe:

  • green beans – The star of the show! You’ll need 2 pounds of fresh, trimmed green beans. Frozen or canned green beans can be substituted if necessary but the texture and flavor will be slightly different. Make sure to remove as much excess moisture as possible by draining and patting dry.
  • mushroom cream sauce – Made with fresh mushrooms, onions and garlic for a deep, rich flavor. A little butter and flour create a thick roux that is thinned out with chicken stock and half and half which adds richness and creaminess.
  • fried onions – Using canned fried onions (French’s) saves a lot of time and adds amazing flavor and texture to this green bean casserole recipe.

How To Make Green Bean Casserole

This recipe is perfection with fresh green beans, savory garlic and onions and succulent mushrooms in a velvety, homemade cream sauce. Don’t forget the fried onions! They add a delightful crunch that is the perfect topping for this recipe.

Here is a quick overview of the process on how to make green bean casserole. You can find the full printable recipe card at the end of this post.

Blanch Green Beans

This is the first step and the term “blanching” is a process that stops the cooking process and preserves the vibrant green color. It’s important for achieving the perfect texture.

  1. Bring a large pot of water to boil and salt generously.
  2. Add the green beans and cook until bright green, about 3 to 4 minutes.
  3. Transfer the green beans to an ice bath (just a large bowl of cold water and ice) and let sit for 3 minutes. Drain well and set aside.

Pro tip: Place the green beans in a salad spinner to get those green beans extra dry! Pat dry with a towel after spinning.

Make Mushroom Cream Sauce

  1. Cook onions in a large skillet with olive oil until translucent.
  2. Add butter and mushrooms and season with salt and pepper. Cook until the mushrooms are brown and tender.
  3. Stir in the garlic and cook another 1 to 2 minutes.
  4. Add more butter and sprinkle the flour over the top. Stir and cook for 2 to 3 minutes.
  5. Whisk in the chicken stock and half and half and bring mixture to a simmer, whisking often. Cook for 5 to 7 minutes or until sauce is thick and bubbly.

Sounding difficult? It’s not! But if you want a shortcut… Whisk together one 15 ounce can of cream of mushroom soup with half a cup of milk to replace the cream sauce.

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Assemble and Bake Green Bean Casserole

  1. Add green beans to the mushroom sauce and toss to evenly coat.
  2. Transfer green bean mixture to a 3 quart baking dish and bake for 25 minutes.
  3. Remove from oven, top with fried onions and continue baking for another 5 to 10 minutes or until fried onions are golden.

If your skillet is oven-safe, feel free to bake this casserole right in the skillet! Save yourself time on clean up later!

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Cheesy Green Bean Casserole

I’m always open to adding cheese to recipes and this casserole is no exception. Add 2 cups freshly shredded cheddar cheese to the green bean mixture before baking for a tasty, cheesy twist to this homemade green bean casserole recipe. You can also sprinkle half a cup of Parmesan cheese right on top before baking.

Storage Information

Make Ahead: This casserole can be assembled 1 to 2 days in advance (without the fried onions). Cover tightly and refrigerate. Let sit at room temperature for 30 minutes before baking as directed. Top with fried onions and add 5 to 10 minutes to the baking time to account for the ingredients not being hot going into the oven.

Freezing Before Baking: Assemble the casserole without the fried onions, do not bake. Cover tightly with plastic wrap and foil or place in an airtight, freezer safe container. Freeze for up to 2 months. Thaw overnight in the refrigerator. Let sit at room temperature for 30 minutes before baking as directed. Top with fried onions and add 5 to 10 minutes to the baking time to account for the ingredients not being hot going into the oven.

Freezing After Baking: Let cool completely, transfer to a freezer safe, airtight container and freeze for up to 3 months. Thaw overnight in the refrigerator and warm in the oven or microwave.

Leftovers: Let cool completely and transfer to an airtight container and refrigerate it for up to 3 days.

What Kind Of Mushrooms Should I Use?

I am not super particular so I typically choose the mushrooms that look the freshest. Cremini mushrooms, portobello mushrooms and baby bella mushrooms are all good options.

How Can I Get Extra Tender Green Beans?

Add 2 to 4 minutes to the boiling time. You don’t want to add too much because the beans will start to fall apart.

Can I Use Canned Or Frozen Green Beans?

I definitely prefer fresh green beans in this recipe. Frozen or canned green beans can be substituted if necessary but the texture and flavor will be slightly different. Make sure to remove as much excess moisture as possible by draining and patting dry.

Can I Make This Casserole Ahead Of Time?

This casserole can be assembled 1 to 2 days in advance (without the fried onions). Cover tightly and refrigerate. Let sit at room temperature for 30 minutes before baking as directed. Top with fried onions and add 5 to 10 minutes to the baking time to account for the ingredients not being hot going into the oven.

Trish’s Tips

This easy Green Bean Casserole recipe is the ultimate comfort food! The recipe is super simple but I’m sharing some of my best tips to ensure you have sensational results, every time!

  • Take a minute to check your green beans to make sure they are fresh and trimmed. Remove any green beans that aren’t crisp.
  • Don’t skip the blanching of the green beans. This cooks them perfectly and preserves that bright green color.
  • Give the roux time to cook in order to get rid of the raw flour taste, 1 to 2 minutes is great.
  • Feel free to add a little Parmesan cheese in the sauce or on top of the casserole for a cheesy twist.
  • Don’t love fried onions? Consider breadcrumbs, panko, crushed Ritz crackers or even cornflakes!
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More Side Dishes You’ll Love

  1. Sweet Potato Casserole
  2. Roasted Brussels Sprouts
  3. Corn Casserole
  4. Mac and Cheese
  5. Creamed Peas

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Print Pin

5 from 3 votes

Green Bean Casserole

The best Green Bean Casserole recipe made with tender green beans, savory mushrooms and a rich, homemade cream sauce all topped with a golden, crispy layer of fried onions – amazing! Such a delicious combination of flavors and textures that is perfect for the holidays! This classic green bean casserole recipe is made from scratch with a homemade mushroom cream sauce – so yummy!

Course Side Dish

Cuisine American

Keyword green bean casserole, green bean casserole recipe, how to make green bean casserole, recipe for green bean casserole

Prep Time 25 minutes minutes

Cook Time 30 minutes minutes

Servings 8

Calories 352kcal

Author Trish – Mom On Timeout

Ingredients

  • 2 pounds fresh green beans rinsed and trimmed
  • 1 tablespoon sea salt kosher salt
  • 2 tablespoons extra virgin olive oil
  • 1 small yellow onion diced
  • 4 tablespoons unsalted butter divided
  • 8 to 10 ounces mushrooms sliced, quartered or chopped
  • ½ teaspoon fine sea salt
  • ½ teaspoon freshly ground black pepper
  • 2 cloves garlic minced
  • 2 tablespoons all purpose flour
  • ½ cup chicken stock low sodium
  • 2 cups half and half
  • 6 ounces fried onions I used French's Fried Onions

Instructions

  • Preheat oven to 375°F.

Blanch Green Beans

  • Bring a large pot of water to boil and salt generously. Add green beans and cook until bright green, about 3 to 4 minutes.

    2 pounds fresh green beans, 1 tablespoon sea salt

  • Transfer the green beans to an ice bath (just a large bowl of cold water and ice) and let sit for 3 minutes. Drain well and set aside. This may need to be done in batches depending on the size of your pot. (Pro tip: Place the green beans in a salad spinner to get rid of more water.)

Mushroom Cream Sauce

  • Meanwhile, in a large, deep skillet, heat the olive oil over medium heat. Add the chopped onions and cook until translucent, about 5 to 7 minutes.

    2 tablespoons extra virgin olive oil, 1 small yellow onion

  • Add two tablespoons of butter to the skillet and stir to melt. Add the mushrooms and season with salt and pepper. Cook the mushrooms, stirring occasionally, for 5 to 6 minutes until the mushrooms are brown and tender.

    4 tablespoons unsalted butter, 8 to 10 ounces mushrooms, ½ teaspoon fine sea salt, ½ teaspoon freshly ground black pepper

  • Stir in the garlic and continue cooking and stirring for another 1 to 2 minutes.

    2 cloves garlic

  • Add another 2 tablespoons of butter to the skillet and sprinkle the flour over the top. Stir the flour into the mushroom mixture and cook for 2 to 3 minutes, stirring frequently.

    4 tablespoons unsalted butter, 2 tablespoons all purpose flour

  • Slowly whisk in the chicken stock and half and half and bring mixture to a simmer, whisking often. Cook for 5 to 7 minutes or until sauce is thick and bubbly. Taste and season with salt and pepper if needed.

    ½ cup chicken stock, 2 cups half and half

Bake Casserole

  • Add green beans and stir until coated. Keep mixture in the oven safe skillet or transfer to a 3 quart baking dish and bake for 25 minutes.

  • Remove from oven, top with fried onions and continue baking for another 5 to 10 minutes or until fried onions are golden.

    6 ounces fried onions

  • Serve immediately and enjoy!

Video

Notes

Storage Information

Make Ahead:This casserole can be assembled 1 to 2 days in advance (without the fried onions). Cover tightly and refrigerate. Let sit at room temperature for 30 minutes before baking as directed. Top with fried onions and add 5 to 10 minutes to the baking time to account for the ingredients not being hot going into the oven.

Freezing Before Baking:Assemble the casserole without the fried onions, do not bake. Cover tightly with plastic wrap and foil or place in an airtight, freezer safe container. Freeze for up to 2 months. Thaw overnight in the refrigerator. Let sit at room temperature for 30 minutes before baking as directed. Top with fried onions and add 5 to 10 minutes to the baking time to account for the ingredients not being hot going into the oven.

Freezing After Baking:Let cool completely, transfer to a freezer safe, airtight container and freeze for up to 3 months. Thaw overnight in the refrigerator and warm in the oven or microwave.

Leftovers:Let cool completely and transfer to an airtight container and refrigerate it for up to 3 days.

See the post above for more frequently asked questions, tips and more!

Nutrition

Calories: 352kcal | Carbohydrates: 23g | Protein: 6g | Fat: 27g | Saturated Fat: 13g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 6g | Trans Fat: 0.2g | Cholesterol: 37mg | Sodium: 1262mg | Potassium: 446mg | Fiber: 4g | Sugar: 7g | Vitamin A: 1173IU | Vitamin C: 16mg | Calcium: 115mg | Iron: 2mg

The BEST Green Bean Casserole Recipe - Mom On Timeout (2024)

FAQs

How do you keep green bean casserole from getting soggy? ›

If your topping is soggy, it's probably because the casserole itself is too wet. Before you add your topping, try to thicken the casserole with flour or cornstarch so the topping sits on top and doesn't sink to the bottom.

Can green bean casserole sit out? ›

The casserole can sit out at room temperature for about an hour, then it should be reheated or stored in the fridge.

How long does homemade green bean casserole last in the fridge? ›

Refrigerate up to 2 days. Reheating: Remove the baking dish from the refrigerator at least 30 minutes or up to 1 hour before you'd like to finish them in the oven. Remove the foil & plastic wrap. Stir ½ cup of the French fried onions into the green bean mixture, then tightly recover the baking dish with foil.

What is the maximum cold holding temperature allowed for a green bean casserole? ›

Cooked beans are a TCS food. Cold TCS food must be held at an internal temperature of 41°F (5°C) or lower.

How do you make a casserole not soggy? ›

To prevent a soupy casserole, be sure to fully thaw any frozen vegetables in a colander over a bowl, and pat dry, squeeze excess moisture out of greens like spinach or chard, and quickly precook watery fresh vegetables like onions, mushrooms or squashes just until they release their moisture.

How do you keep green beans from getting mushy? ›

Blanch the green beans, or they will be mushy when they thaw out. Freeze the beans in an even layer on a lined baking sheet for an hour.

Can you mess up green bean casserole? ›

Your Crispy Onion Topping Is Soggy

Yet it's one of the most common green bean casserole mistakes a home chef can make. If this happens to you, it may be due to adding that topping too early; toppings should be added at the very end of the cooking process, shortly before you pull it out of the oven.

Is it safe to eat cooked green beans left out overnight? ›

After cooking a pot of beans, you'll have about two hours' time of them sitting out before you have to worry about bacteria – that's the safe time outlined by the USDA in their “Danger Zone” range. Once the food temp drops, they may become too unhealthy to eat.

What happens if you leave a casserole out overnight? ›

Bacteria can grow rapidly on food left out at room temperature for more than 2 hours. If food is left out in a room or outdoors where the temperature is 90 degrees F or hotter, food should be refrigerated or discarded within just 1 hour. Myth: When I microwave food, the microwaves kill the bacteria.

Are frozen or canned green beans better for casserole? ›

When I make green bean casserole, I skip canned beans all together. Frozen green beans are the best green beans to use for green bean casserole. Frozen green beans are blanched and flash-frozen to preserve their peak-season flavor.

How do you reheat make ahead green bean casserole? ›

Then, all you need to do is place the green bean casserole in the oven and let it reheat in there for 15-20 minutes, depending on how large of a portion you need to reheat. You can also choose to throw in some additional toppings like fried onions and pop it in again for 5 minutes.

How long can you keep an uncooked casserole in the fridge? ›

Uncooked Casseroles: If the casserole contains raw meat or seafood, it should be refrigerated for no more than 1-2 days before baking. A purely vegetable-based uncooked casserole can be refrigerated for 3-4 days. Cooked Casseroles: Once cooked, casseroles can be kept in the refrigerator for 3-5 days.

Is green bean casserole still good if left out overnight? ›

The USDA says food that has been left out of the fridge for more than two hours should be thrown away. At room temperature, bacteria grows incredibly fast and can make you sick. Reheating something that has been sitting at room temperature for longer than two hours won't be safe from bacteria.

Which method should he use to safely cool the casserole? ›

Proper cooling is critical-- certain bacteria can make poisons that are not destroyed by reheating temperatures. SHALLOW PAN METHOD Divide large containers of food into several shallow pans to cool. This method works well for foods like refried beans, rice, potatoes, casseroles, ground meat, meatloaf, and chili.

What temperature is too cold for green beans? ›

Beans need 70 to 80 days of moderate temperatures to be able to grow and harvest a good crop. Nights should not fall below 40 degrees and daytime temperatures should be between 70 and 90 degrees. Bush beans: Sow seeds one inch deep and about three inches apart in rows 12-18 inches apart.

Should green bean casserole be soupy before cooking? ›

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.

How do you can green beans without getting mushy? ›

Pack the beans into six hot, sterilized pint canning jars, being sure to leave a ½-inch headspace. If you want, you can also add ½ teaspoon canning or pickling salt to each jar. Pour boiling water over the beans in each jar, again leaving a ½-inch headspace.

How do you keep a casserole from drying out? ›

Pro Tip: Avoid Dry Casserole.

The best way to prevent it from drying out is to add a little bit of water, around ¼ cup, to the top of it. Allow the water to seep between the food and the sides of the baking dish. Cover with aluminum foil to seal in the moisture.

Why are my green beans soggy? ›

Most of the time when frozen green beans are soggy, it's because the melted ice from the packaging is adding into the skillet and is too much liquid, or the beans are placed into oil in the skillet that isn't hot.

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