The Cowboys elevated Mitchell from the practice squad to the active roster Saturday.
The move gives the Cowboys more depth at tight end in case Luke Schoonmaker (groin) is unable to play against the Cardinals on Sunday. If he is inactive, then Mitchell would serve as Dallas' TE3 behind Jake Ferguson and Brevyn Spann-Ford. Mitchell joined the Cowboys' practice squad Sept. 3 after failing to make the Panthers' 53-man roster after training camp, and Week 8 marks his first elevation of the season.