カリッと

adverb, noun or participle which takes 'suru'

with a crunch; crisply

Describes a light, crisp crunching sound or texture, often used for food like toast, fried items, or cookies.

• トーストがカリッと焼やけた。

  The toast was toasted to a crisp.

• このクッキーはカリッとしていておいしい。

  These cookies are deliciously crunchy.