The Cowboys scored six points in the first half, missing two other field goal tries. They have three touchdowns in the second half.
Running back Javonte Williams scored his third TD of the day, on a 2-yard run, giving the Cowboys their first lead of the day. They are up 27-23 with 11:17 left in the fourth quarter.
Williams also scored on 8- and 1-yard runs as the Cowboys have scored back-to-back touchdowns and outscored the Cowboys 21-7 in the second half.
Dallas now has 321 yards after gaining only 121 in the first half.
Dak Prescott is 23-of-32 for 259 yards, and CeeDee Lamb has 12 receptions for 148 yards. Williams has 18 rushes for 60 yards. George Pickens, who had one target and no catches in the first half, has one spectacular catch for 53 yards in the second half.
The Texans a touchdown and a punt on two second-half possessions.