Green Bean Casserole From Scratch (2024)

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Green bean casserole is a classic holiday side dish to pair with that Thanksgiving turkey or Christmas ham. This green bean casserole is made entirely from scratch with a creamy mushroom sauce and crispy fried onions.

Green Bean Casserole From Scratch (1)

Are you looking for a green bean casserole recipe made without canned ingredients? This green bean casserole is made with fresh green beans, a homemade creamy mushroom sauce, and fried crispy onions on top.

It's filled with a mild, savory flavor that's comforting and hearty - sure to be a hit on the holiday dinner table! Plus it's easy to prepare a day or two ahead of time, saving you prep time on the big day.

Add green bean casserole to your next holiday meal, like Thanksgiving or Christmas. This recipe serves eight, and can easily be doubled for a crowd.

Ingredients and substitutions

Green Bean Casserole From Scratch (2)

Fried onions:

  • Onion - Sweet onion, yellow onion, or Vidalia onion works in this recipe.
  • Panko bread crumbs - Adds a nice crunchy texture, but can be substituted with traditional bread crumbs if needed.
  • Flour - Coats the onions, along with the panko, to create a crispy crust. I've only tested this recipe using all-purpose flour.
  • Buttermilk - Thickly coats the onions before adding the breading.
  • Seasoning - Salt & pepper lightly season the breading to add flavor.
Green Bean Casserole From Scratch (3)

Casserole:

  • Fresh green beans - Can be substituted with frozen (and thawed) green beans or canned green beans. Fresh or frozen green beans add the best flavor and texture overall. If using canned green beans, skip the cooking and ice bath step.
  • Mushrooms - Button mushrooms or cremini mushrooms work well in this recipe.
  • Chicken broth - Can be substituted with vegetable broth. I don't recommend using a low sodium broth, which adds less flavor to the cream sauce.
  • Half & half - Can be substituted with whole milk, but your sauce will turn out slightly less rich and a little thin.
  • Butter - Unsalted or salted butter works in this recipe.
  • Garlic - Fresh minced garlic adds flavor to the sauce. I don't recommend using jarred garlic, which often has a harsh flavor. Two gloves of garlic can be substituted with ½ teaspoon of garlic powder.
  • Seasoning - Salt, pepper, and thyme add a mild, savory flavor to the casserole. Thyme could be substituted with rosemary, sage, or Italian seasoning if desired.

Tips and tricks

Green Bean Casserole From Scratch (4)

Dish size - Use any 1.5 quart or 8x8 square baking dish for this recipe. If doubling, this recipe will fit a 3 quart or 9x13 casserole dish.

Mise en place - This is a French culinary term for having all of your ingredients measured and tools in place before beginning. This recipe contains several parts with many ingredients. To save stress and time while cooking, measure all of your ingredients and have them ready to go before starting. Read the entire recipe once through so you know what's coming next. Many times, the next step can be started while the previous step is cooking.

Breading the onions - Allow excess buttermilk to drip off the onions before dipping in the breadcrumb mixture. This ensures the onions aren't overloaded with coating, which can fall off during the frying process.

Drain your green beans - Be sure to drain your green beans well before adding to the cream sauce. Overly wet green beans can make the sauce watery and thin.

Use a whisk - When preparing the cream sauce, use a whisk to ensure lumps don't form while cooking.

Frequently asked questions

Green Bean Casserole From Scratch (5)

Can green bean casserole be made ahead of time?

Yes! Assemble your green bean casserole without the onion topping. Cover and refrigerate for 1-2 days in the refrigerator. Store your fried onions in a separate container. When ready to bake, preheat your oven and transfer the casserole to the counter top to bring to room temperature. Top your casserole with fried onions, then bake at 375 for 18-22 minutes.

What is better for a casserole - fresh, frozen, or canned green beans?

I prefer fresh green beans when they're available at my local grocer. However, frozen green beans are flash frozen and maintain their fresh flavor, so they're just as good as fresh in my opinion. Canned green beans will work in this recipe, but have a softer texture and can contain more sodium than fresh or frozen varieties.

Can I use store bought crispy fried onions to top my casserole?

Yes - store bought fried onions are a great time saver if you don't have time to make your entire casserole from scratch.

What do you serve with green bean casserole?

Green bean casserole makes an excellent side dish for holiday meals. I recommend pairing it with ham or turkey, your favorite potato dish (like mashed potatoes or potatoes au gratin), and a side of cranberry sauce.

How long do leftovers last?

Leftover green bean casserole will keep for about 4 days in a tightly sealed container in the refrigerator.

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📖 Recipe

Green Bean Casserole From Scratch (10)

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4.50 from 2 reviews

Green Bean Casserole From Scratch

Green bean casserole is a classic holiday side dish to pair with that Thanksgiving turkey or Christmas ham. This green bean casserole is made entirely from scratch with a creamy mushroom sauce and crispy fried onions.

Prep Time15 minutes minutes

Cook Time35 minutes minutes

Total Time50 minutes minutes

Servings: 8 servings

Calories: 168kcal

Author: Heather

Ingredients

Fried onions

  • 1 small onion, thinly sliced
  • 4 ounces buttermilk
  • ¼ cup all purpose flour
  • ½ cup panko bread crumbs
  • ½ teaspoon salt
  • ¼ teaspoon black pepper
  • canola oil

Casserole

  • 1 pound green beans, trimmed and cut in half
  • 2 tablespoons unsalted butter
  • 4 ounces button mushrooms, diced into ½" pieces
  • 2 cloves garlic, minced
  • 2 tablespoons all purpose flour
  • 8 ounces chicken broth
  • 8 ounces half and half
  • ¼ teaspoon dried thyme
  • ½ teaspoon salt
  • ¼ teaspoon black pepper

Instructions

Fried onions

  • In a bowl, pour buttermilk over sliced onions and toss to coat. Set aside. Combine flour, panko, salt, and pepper in a second bowl.

  • Begin heating a saucepan with 1-2 inches of oil over medium-high heat on the stove top.

  • A handful at a time, transfer onions from buttermilk into panko mixture (allow excess buttermilk to drip off onions first). Toss quickly to coat, then transfer into the hot oil. Fry for about 2-3 minutes, or until lightly browned and crispy. Transfer to a paper towel lined plate. Continue until all onions have been fried.

Casserole

  • Preheat oven to 375 degrees. Grease a 1.5 quart dish or 8x8 baking pan and set aside.

  • Meanwhile, bring a gallon of salted water to a boil. Prepare an ice bath (water and ice) in a large bowl and set aside. Add green beans to boiling water and cook for 5 minutes. Drain beans and immediately transfer to the ice bath to stop the cooking process. Once cooled, drain beans thoroughly and set aside.

  • In a sauté pan over medium heat, add butter. Once melted, add diced mushrooms and cook 3-4 minutes, or until lightly browned. Add minced garlic and cook for 1 minute. Add flour, stir to coat mushrooms, and cook for 1 minute. Add chicken broth and half and half, whisking to incorporate. Decrease heat to medium-low. Add dried thyme, salt and pepper. Cook, stirring occasionally, until mixture thickly coats the back of a spoon, about 4-5 minutes.

  • Remove from heat and add green beans to mushroom sauce. Stir to coat, then pour into prepared dish. Sprinkle top of casserole with fried onions.

  • Bake for 15-18 minutes, or until mixture is hot and bubbly. Remove from oven and serve immediately.

Notes

  • To make ahead: Prepare casserole as directed, but before adding onions or baking, cover and refrigerate overnight, storing onions separately. When ready to bake, preheat oven to 375 degrees, add onions to the top of your casserole, and bake for 18-22 minutes, or until bubbly and warmed through.
  • If doubling, serve in a 9x13 or 3 quart casserole dish.
  • Leftovers will keep for up to 4 days in a tightly sealed container in the refrigerator.

Nutrition Estimate

Calories: 168kcal | Carbohydrates: 15g | Protein: 4g | Fat: 11g | Saturated Fat: 5g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 4g | Trans Fat: 0.1g | Cholesterol: 20mg | Sodium: 466mg | Potassium: 262mg | Fiber: 2g | Sugar: 5g | Vitamin A: 613IU | Vitamin C: 8mg | Calcium: 85mg | Iron: 1mg

Course: Side Dish

Cuisine: American

More Side Dish Recipes

  • Garden Salad
  • Country Potatoes
  • Cast Iron Buttermilk Biscuits
  • Loaded Baked Potatoes

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  1. Green Bean Casserole From Scratch (15)maylorteyer

    I realize it isn't anywhere near thanksgiving but I was craving a good GB casserole and this recipe did not disappoint! The gravy sauce was perfectly delicious even without mushrooms and I was really impressed by how easy it was to make the homemade crispy fried onions. I absolutely will be making this dish again! Thank you so much!

    Reply

    • Green Bean Casserole From Scratch (16)Heather

      Thanks for the great review, glad you enjoyed it! And I agree a good green bean casserole isn't just for Thanksgiving 🙂

      Reply

  2. Green Bean Casserole From Scratch (17)Karly

    Can it just be next Thursday already? This post is going to have me dreaming of green bean casserole until then, 100%. Love it!

    Reply

    • Green Bean Casserole From Scratch (18)Heather

      Yes me too - I can't wait to make it again 🙂 Thanks for stopping by!

      Reply

Green Bean Casserole From Scratch (2024)

FAQs

Should green bean casserole be soupy before cooking? ›

Green Bean Casserole from Scratch FAQs

Cover and freeze until you are ready to bake. You can bake start from frozen without adding the onions until the casserole has already baked for about 20 minutes. Should green bean casserole be soupy? No, your green bean casserole should not be soupy.

How do you make green bean casserole not soggy? ›

Mistake #5: A Runny Casserole

If you don't, the excess water from the beans can leak out into the casserole and make it thin and runny. 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.

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

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.

Why isn t my green bean casserole thickening? ›

Add a thickener

While your green bean casserole is on the stove, incorporate a thickener into the vegetables, such as cornstarch or flour. According to The Kitchn, you can combine cornstarch and a small amount of water or broth in a cup and stir until the lumps are gone, and it becomes a thick yet drizzly consistency.

Can you overcook green bean casserole? ›

Overcooking the beans won't just drain them of their appealing color, but it will also make them too soft and mushy, resulting in a less appetizing casserole.

Why is my green bean casserole so soupy? ›

Green bean casserole should have a nice thick sauce that coats the green beans—it should not resemble soup. One common cause of a watery casserole is not adding enough thickener, such as flour or cornstarch, to your sauce.

How many cans of green beans equals 4 cups? ›

✿ 4 cups of green beans is about 1½ pounds fresh or 16 ounces frozen or 2 cans (15 ounces each) drained.

How do I thicken up green bean casserole? ›

The Casserole Is Too Soupy

Don't worry, there's a relatively easy and quick fix that will help soak up the excess liquid: Make a slurry of flour or cornstarch in liquid (broth or water) to help thicken it up and then cook it for a bit longer.

Why is green bean casserole so good? ›

Fans love the dish in part because of how simple it is to throw together. It calls for ingredients that could be found in a typical home kitchen pantry: canned or fresh green beans, mushroom soup, milk, soy sauce and black pepper.

Do people still eat green bean casserole? ›

Green bean casserole is a popular dish in the United States, especially during Thanksgiving.

Can I eat week old green bean casserole? ›

Green Bean Casserole Leftovers

Your creamy green bean casserole will last about four days in the fridge. The crunchy topping will get softer as time goes by; pop it into the oven to reheat to crisp it up a bit. While casseroles have a reputation for being freezer-friendly, green bean casseroles don't freeze so well.

Do most people like green bean casserole? ›

Instacart conducted a survey with The Harris Poll and found that a majority of Americans, 69%, secretly dislike some classic Thanksgiving food but eat it anyway because of tradition. The top offenders were: Canned cranberry sauce (29%) Green bean casserole (24%)

How many days does green bean casserole last in the fridge? ›

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.

Why is my casserole soupy? ›

You might not realise it, but those perfectly ripe, bursting-with-moisture-veggies that you're tossing into your casserole are most likely the culprits when it comes to a watery bake, which is why it's important to heed the recipe when it comes to prepping your vegetables and cooling your finished product.

Should baked beans be soupy? ›

There should still be liquid in the pan, but it should not be soupy. Beans absorb liquid on standing. (Total baking time is 4 to 5 hours.)

Are baked beans supposed to be soupy? ›

It's normal that even after the baked beans are supposed to be done cooking, they will continue to absorb some liquid. After letting them sit for a few minutes, it's likely they won't turn out as watery as you might fear.

Why are my baked beans so soupy? ›

The longer you simmer and reduce the beans, the more the sauce will thicken. If you don't cook the beans long enough, the sauce will stay loose and runny, according to Home Cook World.

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