(CNN) Across dinner tables in America, the green bean casserole is a Thanksgiving staple and has been for years. One month before the casserole's customary time to shine, the woman who created it has passed away.

Dorcas Reilly was 92 and died of Alzheimer's disease on October 15 in Camden, New Jersey, the Hinski-Tomlinson Funeral Home told CNN.

Reilly was one of the first full-time members of Home Economics department at Campbell's. That's where she came up with what the company calls "the mother of all comfort foods" in 1955.

She simply combined green beans and Campbell's Cream of Mushroom Soup, and called it "Green Bean Bake."

"Dorcas would often share that the first time she made her famous recipe, it did not receive the highest rating in Campbell's internal testing," the company said in a statement

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