I creep off to get instructions (6)
I believe the answer is:
recipe
'instructions' is the definition.
(I've seen this before)
'i creep off' is the wordplay.
'off' indicates anagramming the letters.
'i'+'creep'='icreep'
'icreep' is an anagram of 'RECIPE'.
'to get' acts as a link.
(Other definitions for recipe that I've seen before include "Cook's formula" , "Formula for food dish" , "Instructions on how to cook" , "Instruction for cooking" , "Kitchen directions" .)