French croûte

← Middle French crouste (inherited)

← Old French croste (inherited)

← Old French cruste (mention)

← Proto-Indo-European *krustós (inherited)

← Proto-Indo-European *krews- (mention)

← Latin crusta (inherited)

→ English crut (cognate)

→ Catalan crosta (cognate)

→ French croûton (suffix)

→ French croustiller (mention)

→ French croustade (mention)

→ French encroûter (affix)

→ Romanian crustă (mention)