Cheesy Onion Casserole: Best Thanksgiving Side Dish Ever!

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About: [http://forkableblog.com/ Read my Forkable food blog] I am a busy gal, with working and socializing, but cooking delicious home made food is a priority. It can sometimes be hard to fit it all in, so I am ...

No Thanksgiving is complete without a casserole and this one is literally as easy to make as it is to eat. With only a few ingredients and 30 minutes cooking time, it can easily be made between all the other more complicated Thanksgiving dishes.

Thanksgiving is a day of total hedonism where we gorge ourselves silly and have enough left overs for an army! Cheesy Onion Casserole, a family favorite, is so delicious the left overs are always fought over and we have to evenly and judiciously distribute or else the army is at war.

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Step 1: Ingredients

2-3 Tbs butter or margarine
3 large sweet onions or 4 medium white or yellow onions
2 c. shredded Swiss cheese (8 oz.)
1 can cream of chicken soup, undiluted**
2/3 c. milk
1 tsp. soy sauce
8 or so slices of French bread

**You can substitute cream of mushroom soup for cream of chicken to make vegetarian.

Step 2: Slice Onions

Slice onions and try not to cry. With this many onions, its hard.

Melt butter in a saute pan over medium heat, and add onions. Saute onions until clear, a little brown is ok. In a shallow 2 qt. casserole pan, layer onions, 2/3 of cheese and pepper to taste.

Step 3: Assemble Casserole

Melt butter in a saute pan over medium heat, and add onions. Saute onions until clear, a little brown is ok. In a shallow 2 qt. casserole pan, layer onions, 2/3 of cheese and pepper to taste.

In a sauce pan, heat soup, milk, and soy sauce, stirring to blend. Pour soup mixture in a casserole and stir gently to mix. Top with bread slices. Bake at 350 uncovered for 15 minutes. After 15 minutes, top of bread should be nice and toasted.

Push bread slices under the sauce and top with the remaining cheese.

Step 4: Finish Baking and Eat!

Place casserole back in oven and finish baking for 15 more minutes.

Total prep time: 20 minutes.
Total baking time: 30 minutes.

Quick, simple and delicious!

1 Person Made This Project!

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    68 Discussions

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    DoralA

    Question 1 year ago on Introduction

    I just want to know how many this serves.

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    silm

    2 years ago

    Simple and tasty dish.

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    bjhawley

    2 years ago

    This a go to holiday dish at my house. I keep misplacing the recipe so I have to come on here and refresh my brain. I add a little wine and beef stock when sauteing the onions and it takes just like french onion soup in a pan! LOVE LOVE this recipe.

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    bonni

    2 years ago

    I add a box of croutons to the mix before baking.

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    Jvogue1

    2 years ago

    can it be made ahead without getting too soggy?

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    MaddieJ3

    3 years ago

    Interesting recipe! I've never seen something like this before, but it sounds scrumpious!

    1 reply
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    ChristinaD31MaddieJ3

    Reply 3 years ago

    It sounds kind of like A chicken version of French onion soup, only in a casserole.

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    MaggieF

    4 years ago

    Why does the bread look toasted before it is added to the baking dish? Was this step skipped in the instructions?

    1 reply
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    MadMex2kMaggieF

    Reply 3 years ago

    The bread toasted during 1st 15 minutes. The picture shows the bread being pushed down under the sauce and topped with the remaining cheese and baking for 15 more minutes.

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    What does the bread do for this recipe? Soggy bread of any kind just grosses me out.........Can it be made without the bread topping?

    2 tablespoons butter

    3 tablespoons flour

    1/2 cup chicken broth

    1/2 cup milk

    1/4 teaspoon salt

    /4 teaspoon black pepper

    Save the liquid when you boil a chicken and use it for your chicken broth. Hope this helps. It can be used to replace any recipe calling for a can of cream soup. Add celery/mushrooms/etc. for the different flavors it is calling for.


    Recipe: http://centercutcook.com/cream-soup-substitute/

    1 reply

    It seems a bit like pizza or to be more precise I would say garlic
    pizzas .If you reduce the quantity of milk a bit and ignore a onion
    slice in it you will definitely find yellow color changing into red
    which tastes like Chinese sushian because I have tried it before while I
    was working in highly recognised and famous restaurant in jaipur where you can find many mixed up dishes

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    batonas

    5 years ago on Introduction

    I want to make this delicious mess, but where I live theres no cans of soup like that, maybe some real peaces of chicken would do the trick?

    1 reply

    2 tablespoons butter

    3 tablespoons flour

    1/2 cup chicken broth

    1/2 cup milk

    1/4 teaspoon salt

    /4 teaspoon black pepper

    Save the liquid when you boil a chicken and use it for your chicken broth. Hope this helps. It can be used to replace any recipe calling for a can of cream soup. Add celery/mushrooms/etc. for the different flavors it is calling for.

    Recipe: http://centercutcook.com/cream-soup-substitute/

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    newsound

    5 years ago on Introduction

    This has become one of the most popular dishes for our gatherings. I've needed to start making two to keep everyone happy!

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    Bujholm

    5 years ago on Introduction

    Looks great! Like French onion soup but easier to make - at least in my case, when trying to make onion soup I ended up qith a munch of boiled onions. Here, it's not possible :)

    I wonder though what would be a good substitute for the cream of mushrooms soup, for those of us who live in parts of the world where the Campbell's is not sold in stores :)
    Real cream and canned mushrooms, with a bit of salt?

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    tavoarcila

    5 years ago on Introduction

    Thanks for the recipe, I'll try... to not to cry slicing the onions just wear swimming goggles, You'll look funny for a while but definitely won't cry :-p

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    tnbn

    5 years ago on Introduction

    Anyone try adding beef consumme and making this "French Onion" casserole??? Would it lack something without the creaminess of the soup?

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    lolson1

    5 years ago on Introduction

    Fantastic...I even like this better (if possible) to have it on a day other than T-day! This is outstanding when served with roasted pork or standing rib roast...not as many competing flavors.