The Crimson Tide (12-0, 8-0 Southeastern Conference, No. 1 CFP) led just 13-9 at halftime, dominating the stat sheet but only taking over the scoreboard in the second half. The defense pushed its string of quarters without allowing a touchdown to 14-plus.
Auburn (8-4, 5-3, No. 15) failed to muster much offense for the second straight SEC game, this time playing without injured quarterback Sean White.
Hurts displayed the same poise in overcoming two first-half interceptions that have helped him lead the Tide into the SEC championship game. He completed 27 of 36, mostly short and mid-range passes, and threw for two touchdowns. Alabama has won three straight Iron Bowls for the first time since 1990-92.
Hurts also ran for 37 yards and a touchdown, leading two straight touchdown drives in the third quarter to all but put the game away after a mistake-filled first half.
He ran for a 4-yard score on a drive sparked by four Bo Scarbrough runs. On a fourth-and-4 play, he hit ArDarius Stewart, who spun away from a defender and made another move downfield en route to a 38-yard touchdown and a 27-9 lead.
Stewart gained 127 yards on 10 catches and Scarbrough ran for 90 yards.
Auburn quarterback sub Jeremy Johnson completed 4 of 13 passes for 34 yards. The Tide dominated in total yards, 501-182.
Daniel Carlson connected on four field goals for Auburn.
Auburn didn't get a first down until nearly 25 minutes into the game and continues to have no passing game without a healthy White.
Alabama, which will faces No. 13 Florida in the SEC championship game for the second straight year, still has to get more going in the downfield passing game but remains dominant on defense.