Today January 21st, is National Granola Bar Day.

A granola bar is a snack bar made from granola. Granola itself is an American snack and breakfast food that contains rolled oats, nuts and honey. As a snack food, it is both high in calories and light, which makes it an ideal item for things such as hiking, where calories are needed and weight can be at a premium. This is doubtless why it was made into a bar form, as that makes it convenient to transport too.

The granola bar is very similar to flapjacks and oat bars in other countries.

Image: By Alistair young (Flapjacks...) [CC BY 2.0 (creativecommons.org/licenses/by/2.0)], via Wikimedia Commons