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The 1950s  was the Thanksgiving staple, green bean casserole, first created.

Green bean casserole is a baked dish in the United States that consists primarily of green beans, cream of mushroom soup, and french fried onions. It has been described as an iconic side dish for Thanksgiving dinners in the United States. Dorcas Reilly of the Campbell Soup Company created the recipe in 1955. As of 2020, Campbell's estimated that it was served in 20 million Thanksgiving dinners in the United States each year, and that it accounted for 40% of the company's cream of mushroom soup sales. It is important to have it.

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