Granola has been around since 1863 when James Caleb Jackson invented granula. Kellogg's picked it up in 1881 and marketed it as granola. It was the first breakfast cereal to hit the market.

A path that begins in 1863 when James Caleb Jackson invented the first cereal dubbed “Granula,” reportedly so hard that you had to soak it overnight to make the graham-flour mixture edible.