Vidalia onions are fairly young, considering they were first discovered in 1931 during the tough days of the Great Depression. They grow exclusively in Georgia and are named for the town of Vidalia which is located close to the first fields that grew the crop. The onion is sweet because of the low sulphur content in the sandy Georgia soil. It’s quite possible you would not be able to grow Vidalias sweet if you did not have the right soil mix and make up.
Vidalia Onion Casserole
4 cups onions – cut in chunks
1 can cream of mushroom, undiluted
4 ounces sour cream
1/2 cup seasoned bread stuffing mix
1/2 cup margarine
About 7 slices provolone cheese
Saute onions in skillet, until clear, using half the margarine. Stir in soup and sour cream and place in baking dish. Layer slices of cheese on top. Toss stuffing mix with the rest of the melted margarine and sprinkle on top of casserole.
Bake at 350 about 30-35 minutes
Gram's Recipe Box 
Sounds wonderful! Somewhere in (I think Washington state) there is a very sweet mild onion grown, it may be called Yakima, but very similar to Vidalia.
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Are you thinking of Walla Wallas? I think they are called Walla Walla Sweets maybe.
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Yes, they would have been Walla Walla Sweets.
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I’ve made this casserole several times and everyone LOVES it! I’ve got the onions cooking down right now, MIL requested it at the Thanksgiving dinner table :-D Thanks so much for sharing this recipe, I wish you all a very Happy and Joyous Thanksgiving!
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Great news! I’m so glad you found me and that you are enjoying the casserole. If I ever see Vidalias out here I will buy them to make this dish for sure. :-)
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