Oatmeal raisin cookies are a classic. But do you know where they come from? One popular theory holds that oatmeal raisin cookies descended from oat cakes, a Scottish/British food. Once upon a time, soldiers would carry oat cakes to provide a boost of energy during battle. Fannie Merritt Farmer wrote what is thought to be the first recipe for oat cakes in 1896. It’s thought that over time, these oat cakes evolved into the tasty oatmeal raisin cookies that people of all ages enjoy today!