Answer: zwieback

AnswerCrossword Clue
ZWIEBACKCrisp bread
ZWIEBACKLiterally, "twice-baked"
ZWIEBACKHard bread
ZWIEBACKRusk
ZWIEBACKBaby's biscuit.
ZWIEBACKBiscuit
ZWIEBACKTwice-baked bread
zwiebackbiscuit of dried, twice-baked bread
zwiebacka sweetened bread