The Best Green Bean Casserole Recipe

Prep Time 25 mins
Cook Time 20 mins
Total Time 45 mins

This Green Bean Casserole is a classic holiday side dish made from scratch! Fresh green beans tossed with homemade cream of mushroom soup, then topped with crispy French’s fried onions. This easy green bean casserole recipe is always a hit!

Green Bean Casserole with French's onions

The Best Green Bean Casserole

This green been casserole is always a hit on Thanksgiving – and if you read all the 5 star reviews below, you will find that this is a reader favorite as well! I make it every year and our holiday table just wouldn’t be the same without it. It beats out the classic Green Bean Casserole made with canned ingredients, by 100 miles.  

I promise, I don’t say it’s “THE BEST” lightly. So many people have made and loved this recipe, year after year, and have now added it to their must make Thanksgiving side dishes line up! 

Green Bean Casserole in a white baking dish with french fried onions on top

Homemade Green Bean Casserole

Aside from the French’s fried onions, this green bean casserole is 100% made from scratch. No canned ingredients here! Instead, we use simple ingredients to make a cream of mushroom soup. (This sounds more complicated that it is, I promise it’s super easy!) Then we toss tender, freshly cooked green beans in our homemade cream of mushroom sauce. To finish it off, we top our casserole with a little layer of bread crumbs and French’s fried onions.

I have tried making my own fried onions in the oven, but every time I try it, it’s a big waste of time. The onions are never as crispy and the flavor is just not the same. Store bought french fried onions cannot be replaced and are the best topper for this classic casserole!

How long does it take to make green bean casserole from scratch?

This casserole, as a whole, really doesn’t take long to put together. It takes maybe about 25 minutes and then it’s ready to go into the oven. The combination of the freshest ingredients and extra crispy fried onions will make this the most popular casserole on your holiday table, every time!

Green beans in a bowl next to fried onions, mushrooms and chopped onions.

Recipe Ingredients

The ingredients in this recipe are classic, simple and come together to make the best green bean casserole ever. Seriously! Here is what you’ll need:

  • Fresh Green Beans: I love using fresh green beans for this casserole because they have the most flavor and a bit more texture. If you can’t find fresh green beans, then frozen will do a pinch.
  • Homemade Cream of Mushroom Soup: By making your own homemade cream of mushroom soup, the flavor instantly jumps to an insane new level. It’s easy, I promise! Check out the recipe card for how to make mushroom soup from scratch.
  • French’s Fried Onions: This is the only ingredient in this recipe that is not 100% homemade, but you just can’t beat the crispy onion topping in Green Bean Casserole and French’s makes the best ones.

Homemade cream of mushroom soup next to a bowl of green beans.

How To Make Green Bean Casserole

  1. Blanch the green beans: The first step is boiling the green beans in water until just starting to become tender, then  quickly cooling them down in ice water to stop the cooking process. This gives your green beans the perfect texture without becoming soft! 
  2. Make the cream of mushroom soup: Sauté onions and garlic in butter till softened, then add mushrooms and salt and pepper. Sauté a few minutes more and add flour, stirring to combine. Add chicken broth and half and half and cook until thickened. 
  3. Combine: Toss the blanched green beans in the mushroom sauce and transfer to a large casserole dish. Top with bread crumbs and french fried onions. 
  4. Bake: Bake at 375°F for 20 minutes, until bubbly. 

Green beans tossed in homemade cream of mushroom soup

Tips for Perfect Green Bean Casserole

There are two key tips to making this the best green bean casserole recipe, ever.

  1. Use fresh green beans. They have the best overall flavor and texture and make your green bean casserole a stand out on your Thanksgiving table. Aunt Sharon’s canned green bean casserole will pail in comparison to your show stopper!
  2. Use homemade cream of mushroom soup. That might sound daunting, but I promise it’s very easy to do!
  3. What if you don’t like mushroom soup? If you aren’t a mushroom fan, you can double the onion in the mushroom soup recipe and make a cream of onion soup to use in your casserole. A lot of non-mushroom lovers do this and have left comments below on how delicious it still is! However, if it’s just a texture thing, chop the mushrooms extra finely and you won’t even know they are there!

Green bean casserole topped with crispy onions in a white 9x13 casserole dish

How Long to Cook Green Bean Casserole

This recipe only needs 20 minutes to bake. If you are planning to serve it for a holiday like Thanksgiving or Christmas, then this quick baking side dish saves you tons of time. 

To Made Ahead Of Time

This green bean casserole recipe is a wonderful make ahead side dish and it also travels very well! I usually prepare it a day or two before Thanksgiving to save me time on the actual day. It stores perfectly in the fridge for up to 48 hours before baking. 

To make this casserole ahead:

Complete all the casserole steps until it’s time to put the bread crumbs and french fried onions on top. Save those to be added fresh, so they do not get soggy. Store the prepared casserole in the fridge, wrapped tightly with saran wrap or foil.

Then about 30 minutes before you’re ready to bake it, allow the casserole to sit at room temperature to warm up some. Before baking, top it with the bread crumbs and the layer of french fried onions on top and bake according to recipe directions! 

Green Bean Casserole topped with french fried onions

This casserole has a few more steps than the classic green bean casserole recipe that’s on the back of the Campbells Green Beans can, but I promise it is SO worth it.

After you try this recipe, please make sure and leave a comment or review below on how it turns out for you and your family! ENJOY!

Yield: 9x13 casserole

Easy Green Bean Casserole Recipe

Green Bean Casserole topped with french fried onions in a white baking pan with a wooden spoon removing a serving

This Green Bean Casserole is made from scratch with fresh green beans and homemade cream of mushroom soup! It's easy and delicious!

Prep Time 25 minutes
Cook Time 20 minutes
Total Time 45 minutes


  • 2 tablespoons kosher salt
  • 1.5 pounds fresh green beans, rinsed and ends trimmed
  • 2 tablespoons unsalted butter
  • 1 small onion, chopped
  • 2 cloves garlic, minced
  • 2 large portobello mushrooms, chopped
  • 1 teaspoon kosher salt, to taste
  • 1/2 - 1 teaspoon freshly ground black pepper, to taste
  • 2 tablespoons all-purpose flour
  • 1 cup chicken broth (or vegetable stock)
  • 1 cup half-and-half
  • 1/2 cup breadcrumbs
  • 6 oz french fried onions


  1. Preheat oven to 375°F. Grease a 9x13 casserole dish, set aside.
  2. Blanch the beans: In a large pot, bring about a gallon of water and 2 tablespoons of salt to a boil. Add the green beans and boil for 8 minutes. Drain in a colander and immediately plunge the beans into a large bowl of ice water to stop the cooking process. Drain and set aside.
  3. Canned Green Beans: If using canned green beans instead, drain green beans completely and set aside.
  4. Melt butter in a large skillet set over medium-high heat. Add the garlic and onions, stirring occasionally, until the onions begin to soften, about 4 to 5 minutes. Add the mushrooms, salt and pepper and continue to cook for another 1 to 2 minutes.
  5. Sprinkle in the flour and stir to combine. Cook for 2 minutes. Add the chicken broth and stir to combine. Then add the half and half and simmer until the mixture thickens, stirring occasionally, approximately 6 to 8 minutes.
  6. Remove from the heat and stir in all of the green beans. Transfer green bean mixture to prepared casserole dish.
  7. Top with the bread crumbs and then layer the french fried onions on top. Place casserole in the oven and bake until bubbly, about 20 minutes. If your onions start to brown too quickly, cover the casserole with foil. Serve immediately!


MAKE AHEAD: You can prepare the casserole up to 48 hours ahead of itme. STOP at step 7 in the directions above. Do not top casserole with bread curmbs and french fired onions. Instead, wrap cooled casserole tightly with foil or saran wrap and store in refridgerator. When ready to bake, remove from refrigerator and let rest at room temperautre for 30 minutes before baking. Then continue on with the directions from step 7.

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Nutrition Information:


8 servings

Serving Size:


Amount Per Serving: Calories: 209Total Fat: 11gSaturated Fat: 5gTrans Fat: 0gUnsaturated Fat: 5gCholesterol: 19mgSodium: 2188mgCarbohydrates: 24gFiber: 4gSugar: 6gProtein: 5g

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The Best Green Bean Casserole Recipe: this 5 star, easy Thanksgiving side dish is made from scratch with fresh green beans, mushrooms, real cream and no cans of cream of anything! #greenbeancasserole #thanksgiving #casserole #holidays #christmas #sidedish #casserolerecipes #greenbeancasserolerecipe #thanksgivingrecipes

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I'm a trial & error, self taught, sugar addict who thankfully learned how to survive in the kitchen! I am also a wife, mama of 3.
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