The Hatters opened the scoring when Scott Howells fired home a half-volley from outside the area and KevinGallen soon doubled their lead from 18 yards.
But it looked like being a frustrating night for the Hatters against the second-bottom club when both the recalled Craddock and veteran KevinGallen went close early on.
The former Republic of Ireland midfielder is likely to be assisted by youth coach Joe Gallen - brother of club captain Kevin - for this Saturday's game against Millwall.