CRUSTS is a playable word

crust Scrabble® Dictionary

verb
crusted, crusting, crusts
to form a crust (a hardened outer surface)
22 Playable Words can be made from "CRUSTS"
   2-Letter Words (2 found)
   3-Letter Words (6 found)
   4-Letter Words (8 found)
   5-Letter Words (5 found)
   6-Letter Words (1 found)