Mike McCarthy has made the first significant decision of his tenure in Dallas.
McCarthy retained Moore after he helped Dallas rank first in yards and sixth in points in his first season in the role.
Despite Moore's return, it was unclear who'd be calling the plays. McCarthy did so for the majority of his time in charge of the Green Bay Packers.
"I wanted to make sure we were able to capitalize on what has been established here," McCarthy said.
The head coach added that while he'll implement his West Coast system, the Cowboys' previous offensive terminology will remain the same.
McCarthy gave up play-calling duties for most of the Packers' 2015 season but retook them after the team's offense struggled.
"I'll never do that again," McCarthy said in August 2016 regarding his decision to surrender play-calling duties.