Biscoff are shortcrust biscuits from Belgium. They're also known as "speculoos." They used to be served only during special occasions, but are now available to everyone.
They're made with caramelized sugar, with hints of cinnamon. Biscoff cookies are usually paired with coffee.
The cookies are not too hard to bite, and has a good mix of sweetness and spice. Each bite tastes like Christmas, actually.
Try it and judge for yourself.