Green Bean Casserole

Published November 14, 2018. Updated August 21, 2019

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The only Green Bean Casserole recipe you’ll ever need! It’s made with fresh tender green beans, a rich creamy mushroom white sauce, and it’s finished with the classic French’s crispy fried onions to give it that delicious reminiscent touch. Plus there’s parmesan in the recipe for extra flavor! This recipe is a Thanksgiving staple and one people will request again and again!

Green Bean Casserole

The Best Green Bean Casserole!

We’ve all had our fair share of nasty green bean casseroles. You know the kind with mushy, lifeless canned green beans and canned condensed mushroom soup (with lots of strange ingredients).

This version is made from scratch and is a million times better! It’s worth the few extra steps, I promise! You’ll never look back to that lazy version.

You may likely even find green bean casserole haters becoming true believers.

Close up image of a scoop of green bean casserole. Fresh green beans are coated with a creamy mushroom filling and topped with French's fried onions.

Ingredients You’ll Need for This Recipe

  • Fresh green beans
  • Butter
  • Mushrooms
  • Salt and pepper
  • Garlic
  • Flour
  • Chicken broth
  • Half and half
  • Parmesan cheese
  • French’s crispy fried onions

Ingredients for Green Bean Casserole shown here on a white marble surface. They include fresh green beans, mushrooms, French's fried onions, flour, butter, half and half, chicken broth, parmesan, and garlic.

How to Make Green Bean Casserole

  • Preheat oven to 375 degrees.
  • Cook green beans in a pot of boiling water until just tender.

Showing how to make green bean casserole. Start by boiling green beens in pot of water.

  • Drain green beans from pot and transfer to ice water.
  • Drain green beans well from ice water then pour into a baking dish.

Green beans in an ice water in a glass bowl after draining.

  • Saute mushrooms until softened, while adding in garlic and sauteing briefly near the end.
  • Sprinkle flour evenly over mushrooms then toss to coat and cook briefly.

Sauteeing mushrooms in a large dark non-stick skillet for green bean casserole.

  • Stir in chicken broth and half and half.

Mixing half and half and chicken broth into mushroom mixture for Green Bean Casserole.

  • Bring mixture to a simmer to thicken, while stirring frequently. It should have a nice creamy consistency.

Finished creamy filling in a large skillet set over a marble surface, for Green Bean Casserole.

  • Pour sauce mixture over green beans in baking dish and toss to coat.

Creamy coated green beans and mushrooms in a white ceramic baking dish before baking, for Green Bean Casserole.

  • Sprinkle fried onions evenly over top.
  • Cover with foil (so onions don’t brown too much) and bake 10 minutes, uncover and bake 10 minutes longer.
  • Serve warm for best results.

Adding crispy fried onions to Green Bean Casserole before baking.

Tips for Perfect Green Bean Casserole

  • Only use fresh green beans for best flavor and texture.
  • Stick with half and half, don’t try to substitute milk or it won’t be as good.
  • Par cook green beans, this way they won’t end up crisp and under-cooked by the time casserole is baked through.
  • Blanch beans in ice water so they won’t end up overcooked in the end. It also helps then retain that pretty green color.
  • The sauce should have a great consistency but if you happen to have watery or dry mushrooms you can adjust consistency a bit if desired (thicken with a little more of a flour/water mixture or thin with a little half and half).


Green Bean Casserole in a white ceramic baking dish with a scoop removed to show filling.

What is Half and Half?

One question I get a lot is “what is half and half?” Half and half is basically a mixture of half milk and half cream so if you can’t find it you can make your own. Simple blend 3/4 cup milk and 3/4 cup heavy cream.

Want it Even Richer?

If you love a really rich sauce in green bean casserole, you can substitute heavy cream in place of half and half. I’d use 3 Tbsp flour if doing so as cream is thicker.

Close up overhead image of green bean casserole showing texture of topping and filling.

Can I Make it in Advance?

You can prep it day in advance to do so:

  • Make up to step 7 (be sure not to add onions yet, you want them to stay crisp).
  • Cover and refrigerate.
  • The next day let it rest at room temperature while oven preheats.
  • Sprinkle with onions and bake as directed.
  • Add additional baking time as needed, sauce should be bubbling around edges. You may need an additional 5 – 10 minutes since it’s starting out colder.

Close up image of scoop of green bean casserole on a wooden spoon.

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Three individual servings of Green Bean Casserole on white scalloped salad plates.

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Green Bean Casserole
4.86 from 7 votes

Green Bean Casserole

The only green bean casserole recipe you'll ever need! It's made with fresh tender green beans, a rich creamy mushroom white sauce and it's finished with the classic French's crispy fried onions to give it that flavor we all remember. Plus there's parmesan in the recipe for exciting flavor! This recipe is a Thanksgiving staple and one people will request again and again!
Servings: 10
Prep25 minutes
Cook25 minutes
Ready in: 50 minutes



  • Preheat oven to 375 degrees.
  • Bring a large pot of water to a boil. Cook green beans until just tender, about 5 - 6 minutes. Meanwhile fill a large bowl with ice water.
  • Drain green beans, pour into ice water, stir. Drain green beans well from ice water, pour into 12 by 8 or 13 by 9-inch baking dish.
  • In a large skillet melt butter over medium-high heat. Add in mushrooms, season with salt and saute until softened, about 5 minutes. Add garlic and saute 1 minute longer.
  • Sprinkle in flour and toss and cook briefly (about 30 seconds). Pour in chicken broth and half and half and season with salt and pepper to taste. 
  • Bring mixture to a simmer to thicken sauce, stirring frequently. Stir in parmesan cheese.
  • Pour sauce over green beans in casserole dish and toss to evenly coat. 
  • Sprinkle with crispy fried onions. 
  • Cover with a sheet of foil and bake 10 minutes, uncover and bake 10 minutes longer. Serve warm.


  • Button mushrooms can be used as well.
  • Use freshly grated parmesan cheese for best results.
  • For even more flavor try it with homemade chicken stock.

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  • Gracie

    This is truly a delicious recipe. Thank you. I’m back doing it again for Christmas after having it at Thanksgiving as well. So yummy. This might be scandalous, but I go ahead and use frozen french cut green beans. As a busy Mama of seven, and having a husband who really likes french cut, it’s a nice shortcut. :-) And the result is still fabulous!

  • Halie

    This was so good 🤤 I made it this year for Thanksgiving and now I’m making it again for Christmas because it was just that delicious! It was the fav out of what others had brought.

  • Morgan

    Can you freeze this ahead of time and pull out to thaw and add the onions then bake?

  • Christy

    Eek! I got out of the store w/o parm cheese tonight! Any suggestions for a cheese work around? I have cheddar (mild & medium), mozzarella, swiss, havarti, colby jack, montery jack, and a bit of feta… but ironically just a 1/4 C of processed shaker cheese parm. Help… Anyone? I LOVE this recipe and have been using it for years now. I’m usually more on it. I must’ve been thrown off my game by the grocery cart gridlock and 5-cart pile up – including the grocier’s stocking cart. I got outta there a bit shaken. LOL! ;-)

    • Jaclyn

      Jaclyn Bell

      Hi Christy – I’d probably go with the she shaker parm and 1/4 c swiss. Glad you’ve enjoyed the recipe!

      • Christy

        Thank you so much! I was just about to try dicing shredded mozzarella with lightly dusted corn startch. 8-O

      • Christy

        This worked *BEAUTIFULLY!* Once again, you not only saved the night & day, but as this recipe continues to make memories around our family’s Thanksgiving table, if I showed up with subpar beans (you set the bar high), I would’ve become a jokester target for years to come. LOL! You saved me and all is well. ;-) Thank you, and peace & love to you and yours this Thanksgiving. <3

        • Jaclyn

          Jaclyn Bell

          Thanks so much for your kind words Christy! I’m glad that worked out well for you :). I hope you and your family had a wonderful Thanksgiving!

  • Allison

    I made this for Easter Sunday with my family. My mother in law who always hosts every holiday meal said this is the best green bean casserole she has ever had! I missed a few salting steps but everyone still loved it. Thank you for this awesome recipe!