Roasted or toasted vermicelli will taste nuttier and absorb less liquid than the same amount of simply dried vermicelli. It is usually short in length and made from basically pasta dough.

A good substitute would be to break up angel hair pasta into short pieces (1.5 cm) and then fry in some butter, ghee or olive oil until lightly browned, stirring constantly. This will burn easily so be careful and enjoy!

(Edited for typo)