Sweet Onion Casserole

This recipe is begging me to take another road trip south through Georgia to pick up some sweet Vidalia onions that fills all those bushel baskets along the roadside stands!

The onions were first grown in Vidalia, Georgia in the early 1930’s.  It’s an unusually sweet onion due to the low amount of sulfur in the land in that area.  Mose Coleman is thought to be the man who discovered Vidalia onions in 1931.

The mild sweet taste of Vidalia onions makes them more versatile than stronger onions so they are perfect for this casserole of rice and Parmesan and Gruyère cheeses.  It’s a great tasting side dish that’s easy to put together for a family dinner, a potluck or for a dinner party.  Walla Walla or the Sweet Imperial can be substituted if Vidalia onions aren’t available.  It pairs perfectly with burgers, ribs, seafood, steak or chicken on the grill for a great July 4th meal!

Sweet Onion Casserole

1 tablespoon olive oil
4 cups Vidalia onions, chopped (about 1¾ pounds)
½ cup uncooked long-grain rice
2/3 cup low-fat milk
½ cup shredded Gruyère cheese (2 ounces)
¼ teaspoon salt
½ teaspoon freshly ground black pepper, or less depending on taste
1/8 teaspoon ground allspice
Cooking spray
1/3 cup grated Parmesan cheese (1-1/3 ounces)

Preheat oven to 325 degrees.
Heat a large skillet over medium-high heat.
Add oil to skillet.
Add onion and sauté for 5 minutes until tender.
Place onion in a large bowl.
Cook rice in a large pot of boiling water for 5 minutes. Drain well.
Stir rice and next 5 ingredients (through allspice) into onions.
Spoon onion mixture into an 8-inch square baking dish coated with cooking spray.
Sprinkle Parmesan cheese over all.
Cover and bake at 325 degrees for 40 minutes.
Uncover and bake an additional 5 minutes.
Serves 6

ENJOY!  It’s a unique side dish for the holiday!

Be sure to visit my friend, Linda’s blog @My Kind of Cooking for great tips, recipes and cookbook giveaway!


  1. Love that cheese bet this is a great side with steak! Have a great weekend!

  2. I'm coming with you when you hit those roadside stands in Georgia! This sounds great!

  3. I like the concept here. I've been thinking recently about cooking huge quantities of onions. Don't hold your breath, though.

  4. just got a bag of vidalia onions yesterday! must try this recipe-looks fantastic!

  5. Oh my goodness! Did I mention I LOVE onions??? How amazing this sounds.

  6. I love onions so this recipe is definitely for me, yum yum. Diane

  7. Dear Pam this look absolutely delicious!!Love this recipe, gloria

  8. My mom made an onion casserole similar to this dish that I haven't thought of in years. It would be perfect with grilled meats of any kinds. Thanks for sharing, Pam.

    Have a great holiday!

  9. I loved recipe. Very good!! Have a nice weekend. Kisses, Marta

  10. Que combinación más deliciosa, me ha encantado.


  11. Onions is the code word for fabulous. I love onions and I love what I see here.

  12. Happy 4th of July Weekend! Not a huge fan of onion's but this sounds amazing Pam.

  13. HELLO
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  14. I definitely need to try this. Big fan of cooked onions. Have a wonderful weekend!

  15. Mr. Ken would love this!

    Happy 4th to you!


  16. Love Vidalia onions and this casserole looks fab! Thanks for the great recipe, I can't wait to try it! Have a wonderful holiday, cher!

  17. Vidalias are not so easy to find, but we do have sweet onions readily available that might be a godd substitute!

  18. I like it, I may not have the right type of onions, but I am sure that I can adapt it :-)


  19. What's with the post today. I can't open it to find out what it's about. Best, StephenC

  20. I was introduced to Vidalia onions when we lived in Charleston, S.C.. I was afraid I wouldn't find them in the midwest but my local grocery store has them in season and there's always a truck on the town square that sells huge bags of them. Joy!

    Have a great 4th of July!


  21. There you go again Pam, posting a recipe that I must try! The next potluck we have at our church, this will be one of the dishes I take.

  22. Pam, I just adore onions, and I love how this casserole looks and sounds! Thanks for sharing, sweet friend. I hope you are having a wonderful weekend, and I wish you a very happy 4th!

  23. I love onions almost anyway and sure I'd love this dish

  24. Pam ~ this sounds delicious.
    Have a wonderful 4th!

  25. Yum! Great recipe. I love vidalia onions:)


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