Creamy Green Bean Casserole is a classic side dish recipe with a cheesy twist

Cheesy Green Bean Casserole

This Cheesy Green Bean Casserole is a classic side dish with a cheesy twist! This rich and creamy casserole recipe is going to be your new family favorite!

Creamy Green Bean Casserole is the perfect Thanksgiving side dish!

An Updated Version Of The Classic Green Bean Casserole

While we do love the classics, sometimes I think they could use a little updating. We’re not huge fans of canned cream of mushroom soup for making green bean casserole, not because it’s an ingredient from a can, but because we can make it ourselves with a lot more flavor.

And not a lot of effort.

But to keep this green bean casserole recipe from tasting totally different from the classic recipe, we’ve stuck to using canned french green beans and canned sliced mushrooms.

Of course, you can use all fresh ingredients, too. It just takes a few more minutes of prep workm but it does make for one tasty casserole recipe.

Creamy Green Bean Casserole is a side dish recipe topped with crunchy fried onions

Can I Use Fresh Green Beans In This Casserole Recipe?

As wee said before, classic green bean casserole was made with canned green beans but fresh green beans work just as well in this recipe. If you’re using fresh green beans you can steam them for 5 minutes in the microwave or blanche them in a pot of water to soften them first.

I think it’s a matter pf preference, or a matter of taste. We’re using canned today because it’s what we had on hand. and to give a small nod to the classic green bean casserole recipe.

I’ve made this green bean casserole both ways and it’s delicious both ways. One tip I have for using canned green beans is to rinse them before adding them to the casserole. This gets rid of that “canned green bean” flavor so the beans taste fresher.

Creamy Green Bean Casserole is a family favorite side dish recipe

Does This Casserole Use Canned Cream of Mushroom Soup?

Like I said before, we’ve updated this green bean casserole just a little. There’s nothing wrong with canned cream of mushrooms soup – nothing at all. I just think you can make your own sauce from scratch that tastes WAY better and without a ton of time.

PLUS we’re adding cheese to our cream sauce so already you know this version is going to be top notch.

Can You Make This Green Bean Casserole Ahead Of Time?

Yes you can, and you should. If you’re making this casserole for Thanksgiving or any dinner party – or just dinner…you should do whatever you can ahead of time if you can.

You can make this casserole completely through to the end, except adding the fried onions on top. The fried onion topping might get mushy if you add it to the casserole and let it sit in your refrigerator, so that’s an easy thing to add right before getting your green bean casserole in the oven.

Here’s what your casserole will look like right before you put it in the oven. Of course you can totally cover this with the fried onions, we just wanted to give you a peak and that creamy, green bean filling underneath!

Creamy Green Bean Casserole is a make ahead side dish recipe

Side dish recipes like this one make planning holiday meals so much easier. You can have most side dishes prepped and ready to go and then just worry about the main meal.

Thanksgiving side dishes for instance are a big deal at my house. These are the side dish recipes that you probably don’t make all the time since they are usually more on the rich and decadent side, stuff we don’t eat all the time.

Creamy Green Bean Casserole is a green bean casserole with cheese

Can I Make This Green Bean Casserole In My Slow Cooker?

Short on oven space? You can also make this Cheesy Green Bean Casserole in your slow cooker!

All you have to do is double this recipe and cook it on low for 4 hours. After 4 hours turn it down to the “warm” setting until you’re ready to serve. When it’s time for dinner, add the fried onions to the top and place a serving spoon right in the crock pot!

Or you can transfer the casserole to a serving dish, then cover the top with fried onions and serve.

Creamy Green Bean Casserole is a classic side dish recipe with a cheesy twist

OK so I hope I’ve given you guys ALL the options here so that you can add this green bean recipe to your holiday side dish menu with ease!

Looking For More Side Dish Recipes?

The BEST Sausage Stuffing!

Perfectly Smooth Mashed Potatoes

Creamed Spaghetti Squash with Bacon and Gruyere

Grandma’s Best Stuffed Artichokes

Creamy Green Bean Casserole is a classic side dish recipe with a cheesy twist

Cheesy Green Bean Casserole

  • Author: Dan
  • Prep Time: 15 minutes
  • Total Time: 15 minutes
  • Yield: 8 servings 1x
  • Category: side dish
  • Method: oven
  • Cuisine: American


This easy green bean casserole recipe can be made ahead of time so all you need to do is bake it in the oven when you’re ready!


4 tablespoons butter

1 cup diced onion

1 tablespoon chopped garlic

4 tablespoons flour

1 1/2 cups chicken broth

3/4 cup heavy cream

1 cup gruyere or white cheddar cheese

3 cans (14.5 oz.) french green beans {*can substitute fresh, see note} rinsed and drained

2 cans (8 oz.) sliced mushrooms {*can substitute fresh, see note} rinsed and drained

1 1/2 teaspoons kosher salt

1/23/4 teaspoons ground black pepper (to taste)

1/4 teaspoon fresh grated nutmeg

1 1/2 cups fried onions (I used French’s)


Preheat the oven to 400 degrees.

Add the butter to a large skillet over medium heat. Once the butter is melted, add the onion and cook for 3-4 minutes to soften.

Add the garlic to the pan and then cook a minute longer. Whisk in the flour, stir the flour into the onions and cook for 1 minute.

Pour in the chicken broth and whisk until the flour is incorporated into the broth. Stir in the cream and bring to a simmer to thicken for 2-3 minutes.

Whisk the cheese into the sauce then season with salt, pepper and nutmeg.

Add the green beans and mushrooms and stir to combine with the sauce. Remove the skillet from the heat.

Pour the mixture into an 9″ x 13″ baking dish (2 quarts) and top with the fried onions.

Bake for 25 minutes until the filling is bubbling. Let the casserole rest for 5 minutes before serving.


* If substituting fresh green beans you’ll need about 2 pounds of beans, trimmed and steamed or blanched. To steam the beans add them to a glass bowl with 2 tablespoons of water, cover with plastic wrap and cook in the microwave for 5 minutes.

To blanche the beans, add them to salted boiling water for 5 minutes and drain.

* To substitute fresh mushrooms, you’ll need an 8 ounce package of mushrooms, cleaned and sliced. Add the mushrooms to the skillet after the onions have cooked and before the garlic goes in. Cook the mushrooms for 5 minutes until browned, then continue with the instructions.

Keywords: green bean casserole, casseroles, side dish recipes, green bean casserole recipe, thanksgiving sides, green bean recipes, vegetable recipes

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