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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  • Green Beans and Onions
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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

How to make green bean casserole not soggy? ›

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.

Is green bean casserole better with canned or fresh? ›

"Canned green beans are very soft and delicate," Malarkey says. "They tend to mush up while mixing, and I like a little crunch to my green bean casserole." The other two pros we spoke with agreed. When presented with the choice of fresh or frozen green beans for green bean casserole, frozen came out on top.

Will my green bean casserole thicken as it cools? ›

Cool before serving.

Let cool for 10 minutes before serving. The sauce will thicken as it cools.

What causes green beans to be mushy? ›

Undercooked green beans are rubbery; overcooked are mushy. If you are boiling beans, simply begin tasting them after a few minutes. At first you will have a hard time biting through them. As the texture softens, the green beans are closer to being perfectly cooked.

How long can green bean casserole sit out before baking? ›

How Long 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.

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.

Should you rinse canned green beans before cooking? ›

Do You Need To Rinse Canned Beans? According to The Bean Institute, you can reduce up to 41 percent of the sodium in canned beans by rinsing them. "It's fine to add the bean liquid to many recipes, but if you want to reduce the amount of sodium, it's best to drain and rinse canned beans," the website states.

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.

Is it safe to eat green bean casserole left out overnight? ›

According to the USDA, food that has been left out of the fridge for more than two hours should be thrown away. That's because between 40° F and 140° F (what the USDA calls the "Danger Zone"), bacteria grows incredibly fast and can make you sick.

Do people still eat green bean casserole? ›

Green Bean Casseroles are served at 20 million Thanksgiving dinners every year.

How many ounces are 4 cups of green beans? ›

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

Will green bean casserole get soggy? ›

Any liquid from the beans will make your casserole watery. Only add 1/4 cup milk with the condensed soup—do not add the water as directed on the can. Add the crispy fried onions during the last 5 minutes of baking or they will absorb some of the sauce and become soggy.

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.

How do you make a casserole not soggy? ›

Just because your casserole is starting to look a bit soupy doesn't mean it's beyond saving. In fact, all you need to do is add some pasta noodles or grains to your base. This trick works for the simple reason that both types of ingredients soak up water as they cook.

How do you keep casserole topping from getting soggy? ›

Assuming that you want to serve the casserole hot and the streusel crispy, keep the casserole and the streusel separate until almost serving time. This means you will have to bake the streusel on a cookie sheet until crisp and ready, then let them cool uncovered and transport them in a separate container.

How do you keep green beans crisp? ›

How to Store Green Beans. Green beans should be stored unwashed in the crisper drawer of your fridge. If they came in a bag, keep them in the bag when storing. If they came in a small berry box from the market, transfer them to a reusable storage or plastic bag before storing them in the fridge.

How do you make a casserole less watery? ›

10 Tips To Fix Or Prevent Watery Casseroles
  1. Prep Vegetables Ahead Of Time. Vegetables boiling on a stove - Solstock/Getty Images. ...
  2. Add A Starch. ...
  3. Experiment With Pasta Or Grains. ...
  4. Take The Lid Off. ...
  5. Drain Fat From Meat. ...
  6. Choose A Dry Or Low-Fat Cheese. ...
  7. Sprinkle Seeds Into Your Bake. ...
  8. Remove Excess Liquid.
Oct 29, 2023

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