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Green Bean Casserole with Onion Rings

by Kristen

This is the easiest and most delicious Green Bean Casserole you can make! All you need is FIVE ingredients and a sheet pan.   The golden brown crispy onion rings on top make this recipe unique and mouthwatering!

In my family, green bean casserole always appears at our holiday table in some way or another. Even though more than 1/2 of the people in my husband’s family are gluten-free,  and our extended family has a mushroom allergy, we have had to learn to abridge the recipes as needed for various holidays.

This sheet-pan green bean casserole is a true ” dump and bake” recipe”  You don’t even have to thaw your frozen green beans, and the golden brown restaurant-style onion rings instead of fresh fried onions on top give this easy side dish a unique and exceptional flavor.

Green Bean Casserole is among the favorite holiday classics in my family. We usually have this vegetable side dish at Thanksgiving, Easter, and Christmas,   but we don’t discriminate against other times of the year to enjoy it.

Ingredients Needed

24 ounces of frozen whole green beans  or two 12-ounce bags

10.5 ounce can of cream of celery soupyou can also use cream of mushroom 

One tablespoon of olive oil 

8 ounces of white mushrooms sliced, washed, and dried

Two teaspoons of minced garlic. You can also use garlic powder

One 14-ounce bag of frozen onion rings or enough onion rings to completely cover your green bean casserole 

Can I use fresh green beans instead of frozen ones?

Yes, but you may need to allow them a few additional minutes to cook.

Equipment Needed

baking sheet, baking dish, or casserole dish.

You can choose to line your sheet pan with parchment paper.

A medium or large skillet for sauteing the mushroom.


1. Preheat oven  to 400 degrees

2. Saute Mushrooms in a saucepan over medium heat.   You will saute them in olive oil and garlic until the mushrooms are brown and fully cooked. Set aside.

3. Sprinkle frozen green beans onto your sheet pan.

4. Spoon the cream of celery soup on top of the green beans evenly. Add Mushrooms evenly over the green bean mixture as well.

5. Arrange frozen onion rings on top of green beans and creamy mushroom

6. Bake in the oven for 25-30 minutes or until the onion rings are golden brown and the green beans are tender and bubbling.

7. Remove from the oven and serve.


Store in an airtight container for up to three days. Avoid reheating in the microwave, or the onion rings will get soggy.

How Can I make this recipe gluten-free?

Yes, if you purchase the right ingredients. Ingredients. Great Value has a gluten-free cream of mushroom soup, or you can make your own from scratch from a recipe online. There are also several brands of gluten-free onion rings.    If someone in your family has an allergy, you will want to investigate your ingredients.

Can I make this recipe mushroom-free?

Yes! You can easily omit the mushrooms from this recipe. When our holiday table has a mushroom allergy, we will use cream of celery soup instead of cream of mushroom soup in our green bean casserole.

If you like this green bean casserole recipe, you should also try the following:

Sausage and Gravy Green Bean Casserole 

Sweet Potato Casserole Chocolate Chip Cookie Bars 

Slow Cooker French Style Turkey 

Leftover Cranberry Sauce Oatmeal Muffins 

Parmesan and Cheddar CheeseZucchini Muffins 

Instant Pot Wild Rice Stuffing 

Onion Ring Green Bean Casserole

This Sheet Pan is the easiest and most delicious Green Bean Casserole you can make!  All you need is FIVE ingredients and a sheet pan.  The Crispy Onion Rings on top make this recipe unique and mouthwatering!


  • 24  ounces whole frozen green beans
  • 10.5 ounce can cream of celery soup
  • 8 ounces white mushrooms
  • 1 tablespoon olive oil
  • 2 teaspoons garlic
  • 1 14 ounce package frozen onion rings


  1. Preheat oven to 400 degrees

  2. Saute Mushrooms in a saucepan over medium heat. You will saute them in olive oil and garlic until the mushrooms are brown and fully cooked.  Set aside.

  3. Sprinkle frozen green beans onto your sheet pan.

  4. Spoon the cream of celery soup on top of the green beans evenly.  Add Mushrooms evenly over the green bean mixture as well.

  5. Arrange onion rings on top of green beans and creamy mushroom sauce. 

  6. Bake in the oven for 25-30 minutes or until the onion rings are golden brown and the green beans are tender and bubbling.

  7. Remove from the oven and serve


Store in an airtight container for up to three days.  Avoid reheating in the microwave, or the onion rings will get soggy.

Did you make this sheet pan onion ring green bean casserole?   I would love to hear how it turned out for you! Please comment below this blog post or tag me on social media and let me know how you liked it! You can find me on Facebook, Pinterest, Twitter, and Instagram.



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