Sweet Onion Casserole Recipe - Allrecipes.com
Sweet Onion Casserole  Recipe
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Sweet Onion Casserole

Recipe by  

"This wonderful combination of sweet onions, Swiss cheese, and rice is a tasty side dish for anything from grilled meats to roasted poultry. It is a favorite in our home, and you'll get rave reviews every time you serve it."

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Ingredients Edit and Save

Original recipe makes 1 2-quart dish Change Servings
  • PREP

    15 mins
  • COOK

    1 hr 15 mins

    1 hr 30 mins


  1. Preheat oven to 350 degrees F (175 degrees C). Butter a 2-quart baking dish.
  2. Bring water to a boil in a large saucepan, and sprinkle in the rice. Stir, reduce heat to low, and simmer the rice until it is half-cooked, about 5 minutes. Drain the rice, and set aside.
  3. Melt the butter in a large skillet over medium heat, and cook and stir the onions until translucent but not browned, about 8 minutes. Mix the cooked onions and the butter from the skillet with the rice, and stir in the half-and-half, salt, and 1 3/4 cup of the Swiss cheese. Transfer the mixture to the prepared baking dish, and sprinkle the remaining 1/4 cup of Swiss cheese over the top.
  4. Bake uncovered in the preheated oven until the rice is tender and the top is lightly browned, about 1 hour.
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Reviews More Reviews

Most Helpful Positive Review
Sep 19, 2011

I thought this was really delicious with a couple additions. Another review said it needed some spice so I added 3 minced garlic cloves when the onion were almost done cooking. I also added a T. or so fresh parsley, salt (not 1 & 1/2 t.) and pepper to taste. I would probably make this again.

Most Helpful Critical Review
Sep 01, 2011

I could not bring myself to use a whole 3# bag of sweet onions for just my boyfriend and I, so I just used about half (4 large onions). I reduced the salt for fear that 1 1/2 tsps. would make it too salty. The half and half combined with the swiss cheese made for a fluffy, almost egg-like texture that I liked quite a bit. But, I found the casserole almost too sweet. The other ingredients were not savory enough to contrast the sweetness. Perhaps cooking the rice in a chicken broth and adding spices might help with that.


14 Ratings

Jan 04, 2012

It was very delicous. The only thing I added was 4 cloves of garlic and I used regular white rice.

Mar 27, 2013

Recipe Group Selection: 23, March 13 ~ Loved it! Do I think more spices could be added for extra seasoning, absolutely. I also think more rice could be added to the dish as it seemed to get lost in 3#’s of onions. But my DH and I did enjoy the simple taste of this dish. I ran the onions and the Swiss cheese through the food processor to help speed up the process. This dish makes A LOT if you make the full batch. My 2 qt. casserole dish must not have been deep enough, as I had run-overs in the oven. Enough spillage, that I’m thankful for the self-cleaning feature on my oven. My parents also enjoyed this side dish. I re-purposed the leftovers into a breakfast casserole that I was making the next night. It worked great and added delicious flavor to ‘Slow Cooker Western Omelet’ from AR. Thanks Bobbie for sharing your recipe, I will be making it again.

Mar 25, 2013

This recipe was the March 23, 2013 Recipe Group Selection. I thought this was a nice side dish that complimented the Flat Iron Steak with Balsamic Reduction I had made. Although I was pleased it didn’t compete with the flavors of the steak, I felt it could have had a little more jazz. It was just a little too bland for us.

Oct 16, 2011

This was good, but couldve been better. It just wasnt creamy enough. we had it with a cauliflower au gratin and mixed together were fabulous. If i do decide to make it again i will make a gravy with the half and half and swiss. Try it, but make a roux with the half&half and some chicken broth/stock and then mix in the swiss then add in the onions and rice-it will be fantastic:)

Mar 26, 2013

Made this for Recipe Group...We thought this was very good! After reading the reviews, I decided to add a few things...I sauteed garlic w/ the onion (cooked in butter and a bit of evoo). I also used a mix of swiss, Ballyshannon and parmesan cheeses, which gave this a great flavor. I looked really 'white' while I was mixing everything together, so I threw in some parsley for a little color. This had a really nice flavor, and I would make it again! Thanks for sharing. :)

Mar 25, 2013

Husband said we could make this again sometime. Did add some red pepper flakes for flavor. After in oven, I wished I would have thought to have added mustard powder as I think it would have went well with the swiss cheese flavor. Served with grilled pork chops and broccoli.


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  • Calories
  • 323 kcal
  • 16%
  • Carbohydrates
  • 32.4 g
  • 10%
  • Cholesterol
  • 51 mg
  • 17%
  • Fat
  • 17.1 g
  • 26%
  • Fiber
  • 3 g
  • 12%
  • Protein
  • 11.4 g
  • 23%
  • Sodium
  • 552 mg
  • 22%

* Percent Daily Values are based on a 2,000 calorie diet.

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