Andie Thueson » Recipes » Side Dishes » Perfectly Classic Green Bean Casserole

Perfectly Classic Green Bean Casserole


Made from a deliciously creamy roux this simple made from scratch classic green bean casserole is sure to impress!

Do you have a signature dish for Thanksgiving? A dish that if you don’t show up with it, you’re in BIG time trouble?

For me, I actually have two dishes.

Every year, whether we are with my family or my husbands, there is no way I can get away with not bringing these TWO delicious dishes. And guess what? I am totally ok with that because I’m equally obsessed with my signature dishes! ????‍♀️ Nothing wrong with tooting your own horn!

Today I am sharing with you my perfectly classic green bean casserole recipe. What makes this dish is that there is not one single can of “cream of whatnot” in sight. With a homemade roux, creamy sour cream and blessed cheese this dish is melty and savory and all the good things, you want a casserole to be. And let’s not leave out the infamous french fried onions that help take this classic green bean casserole over the top. ❤


 Cheesy and Savory Green Bean Casserole

In full disclosure, this dish is not healthy, low fat, or low calorie. With a couple tweaks, you could make it Keto- friendly, so there is that. This is just a fun dish to enjoy at Thanksgiving, Christmas or a random Tuesday when you are looking to impress some friends. Really, it is a dish that WILL be well received. I have some picky peeps in my family and all of them love it! I rarely have leftovers which is super sad for me! Ha!

Like any good creamy dish, it all starts with a roux. Combine your butter, and flour and stir continuously until it starts to bubble and thicken. Then you’ll add your onions, letting the roux coat onions and soften for a bit (1-2 minutes). Then add sugar and sour cream, mix until sour cream melts and creates a nice, rich cream sauce. 

Green Bean Casserole Instructions

Then add your green beans – I personally love the french cut beans, which are a little thinner and not has chewy so it provides a nice texture. I have tried this with frozen beans and it was a disaster! So DO NOT try frozen beans- stick with canned! I have used canned beans from our garden, back in the day when I had time and space for such things. This was my personal fave! So if you are a canner, – then your beans will be amazing in this!

Classic Green Bean Casserole Recipe

Once all the ingredients have been combined, layer in an 8×8 glass pan.- I usually double the recipe when feeding a crowd! Then layer with sharp cheddar and french fried onions. 

Classic Green Bean Casserole

The smile is no lie! I am genuinely super excited about this. 

Classic Green Bean Casserole
5 from 5 votes

Perfectly Classic Green Bean Casserole


  • 2 TBS Butter
  • 2 TBS All Purpose Flour
  • 1 Tsp Salt
  • 1 Tsp Sugar
  • 1/4 Onion Diced
  • 1 Cup Sour Cream
  • 3 Cans French Style Beans 14.5 oz Cans
  • 2 Cups Sharp Cheddar Cheese Shredded
  • 1 Cup French Fried Onions


  1.   Preheat oven to 350 degrees F (175 degrees C)

  2.   Melt 2 tablespoons butter in a large skillet over medium heat. Stir in flour until smooth, and cook for one minute. Stir in the salt, sugar, onion, and sour cream. Add green beans, and stir to coat.

  3.   Transfer the mixture to an 8 x8 glass baking dish . Spread shredded cheese over the top. Top with french fried onions and sprinkle over the cheese.

  4.   Bake for 30 minutes in the preheated oven, or until the top is golden and cheese is bubbly

Classic Green Bean Casserole

Guys, this dish is one I look forward to all year long! I actually end up getting talked into making this perfectly classic green bean casserole for Thanksgiving AND Christmas dinner! It is sure to become your family’s favorite too.


  1. 5 stars
    This is the perfect side dish for Thanksgiving!

  2. 5 stars
    I love this easy and healthier version of green bean casserole.

  3. 5 stars
    You simply can’t have Thanksgiving without green bean casserole!

  4. Natasha Kravchuk says:

    5 stars
    Mmm this is calling my name and makes me so excited for Thanksgiving!

  5. Allyson Zea says:

    5 stars
    I am the only one in my family that loves green bean casserole but I am SO trying your recipe!

  6. Heidi Richards Mooney says:

    The BEST GREEN BEANS EVER! Thank you for sharing the recipe on Instagram!

    My best,

    Heidi Richards Mooney, Founder
    Women in Ecommerce

    1. Yay! So glad you liked them! <3

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