Kicker Tristan Vizcaino added a 2-yard TD run on a fake field goal in the first half.
Utah State (1-2) got two touchdowns from defensive players: Nose tackle David Moala had a 1-yard TD run in the first half and Jontrell Rocquemore returned a fumble 97 yards for a touchdown in the fourth quarter.
Browning has steadily improved from the opener at Boise State where he struggled through moments of looking like a freshman and couldn't get the Huskies offense started. He threw for 326 yards last week against Sacramento State and was even better against a higher quality opponent.