The Oatmeal Creme Pie traces back to 1935 when O.D. McKee sold cakes from his car during the Great Depression, launching what became Little Debbie.
https://www.foxnews.com/food-drink/depression-era-little-debbie-snack-built-family-run-bakery-still-has-americans-hooked
https://www.foxnews.com/food-drink/depression-era-little-debbie-snack-built-family-run-bakery-still-has-americans-hooked