Title: 2007 Dallas Cowboys season
Content:  also clinched a playoff berth. Hall of Fame/Former Cowboy QBs Roger Staubach and Troy Aikman were in attendance as honorary captains, along with the commemoration of the Super Bowl anniversaries of the '77 Cowboys & the '92 Cowboys. The Cowboys won the 10–1 duel with the win and improved to 11–1 while the Packers fell to 10–2. This is the last time to date that the Cowboys have beaten have the Packers at home, as the two teams would not meet in Dallas again until 2013, and the Packers have won four straight in Dallas as of 2019. For Tony Romo, he ended this part of the season with a franchise-best 33 touchdown passes.
Title: History of the Dallas Cowboys
Content:  The Cowboys began the 1977 season 8-0 before losing in consecutive weeks to the St. Louis Cardinals in a Monday night home game and the Steelers in Pittsburgh. After the losses, however, the Cowboys won their final four regular season games. Dallas had both the #1 defense and #1 offense in the NFL. In the postseason, the Cowboys routed the Chicago Bears 37-7 and Minnesota Vikings 23-6 before defeating the Denver Broncos 27–10 in Super Bowl XII in New Orleans. As a testament to Doomsday's dominance in the hard-hitting game, defensive linemen Randy White and Harvey Martin were named co-Super Bowl MVPs, the first and only time multiple players have received the award.
Title: 1995 Dallas Cowboys season
Content:  The 1995 Dallas Cowboys season was the franchise's 36th season in the National Football League and was the second year under head coach Barry Switzer and final of the three Super Bowl titles they would win during 1992 to 1995. Dallas would be the first team to ever win three Super Bowls in a span of four seasons (would be later matched by the New England Patriots from the 2001 to 2004 seasons). Switzer guided the Cowboys to a fifth Super Bowl win by defeating the Pittsburgh Steelers in Super Bowl XXX. As of 2020, this is the last time the Cowboys appeared in the NFC Championship Game, and in turn, their last Super Bowl appearance.
Title: History of the Dallas Cowboys
Content: The first NFL team to win three Super Bowls in four years, with Super Bowl wins in the 1992, 1993, and 1995 seasons. Only one other team, the New England Patriots, have won three Super Bowls in a four-year time span, doing so in the 2001, 2003, and 2004 seasons. ; The first team to hold the opposing team to no touchdowns in a Super Bowl. Dallas beat the Miami Dolphins 24–3 in Super Bowl VI.  The only other teams to do this are the New England Patriots, who did so in their 13–3 win against the Los Angeles Rams in Super Bowl LIII, and the Tampa Bay Buccaneers in Super Bowl LV, beating 
Title: History of the Dallas Cowboys
Content:  Super Bowl LII to the Philadelphia Eagles after the 2017 season by winning Super Bowl LIII 13–3 against the Los Angeles Rams the next season. ; The first NFL team to lose the Super Bowl after winning it the previous year. After defeating the Denver Broncos 27–10 in Super Bowl XII following the 1977 season, they were defeated by the Pittsburgh Steelers 35–31 in Super Bowl XIII following the 1978 season.  This has only happened five times since: The Washington Redskins lost Super Bowl XVIII 38–9 to the Raiders a year after winning Super Bowl XVII 27–17 against the Miami Dolphins, the Green Bay Packers lost Super Bowl XXXII 31–24 to the Denver 
Title: Dallas Cowboys
Content:  Cowboys routed the Chicago Bears 37-7 and Minnesota Vikings 23-6 before defeating the Denver Broncos 27–10 in Super Bowl XII in New Orleans. As a testament to Doomsday's dominance in the hard-hitting game, defensive linemen Randy White and Harvey Martin were named co-Super Bowl MVPs, the first and only time multiple players have received the award. Dallas returned to the Super Bowl, following the 1978 season, losing to Pittsburgh 35–31. Bob Ryan, an NFL Films editor, dubbed the Cowboys "America's Team" following the Super Bowl loss, a nickname that has earned derision from non-Cowboys fans but has stuck through both good times and bad.
Title: History of the Dallas Cowboys
Content:  The Cowboys moved from the Cotton Bowl to Texas Stadium in week six of the 1971 season. Although the first game in their new home was a 44–21 victory over New England, Dallas stumbled out of the gate by going 4–3 in the first half of the season, including losses to the mediocre New Orleans Saints and Chicago Bears. Landry named Staubach as the permanent starting quarterback to start the second half of the season, and Dallas was off and running. The Cowboys won their last seven regular season games (finishing 11-3) before dispatching of the Minnesota Vikings and San Francisco 49ers in the playoffs to return to the Super Bowl. In Super Bowl VI, behind an MVP performance from Staubach and a then Super Bowl record 252 yards rushing, the Cowboys crushed the upstart Miami Dolphins, 24–3, to finally bury the "Next Year's Champions" stigma. The Cowboys rushed for 252 yards, while holding the Dolphins, who went 17–0 in 1972, to 185 total yards.
Title: List of Dallas Cowboys seasons
Content:  This article is a list of seasons of the Dallas Cowboys American football franchise of the National Football League (NFL). The list documents the season-by-season records of the Cowboys' franchise from to present, including postseason records, and league awards for individual players or head coaches. The Cowboys franchise was founded in 1960 as an expansion team. The team has earned 33 postseason appearances, most in the NFL, the longest consecutive streak of winning seasons with 20, the second-most appearances in the NFC Championship Game (14, behind the San Francisco 49ers' 15) and the second-most Super Bowl appearances (Tied at 8 with the Denver Broncos and Steelers) behind The New England Patriots with 11. The Cowboys have played for 10 NFL Championships and have won 5, all five being Super Bowls. The Cowboys won Super Bowls VI, XII, XXVII, XXVIII and XXX. They also played in and lost Super Bowls V, X, and XIII.
Title: Dallas Cowboys
Content:  The two teams met in the first regular-season game the Cowboys ever played in 1960 (a 35–28 loss to the Steelers), the first-ever regular-season victory for the expansion Cowboys in 1961, and would later meet in three Super Bowls, all of them closely contested events. The Steelers-Cowboys is to date the Super Bowl matchup with the most contests. The Steelers won Super Bowl X and Super Bowl XIII; both games were decided in the final seconds, first on a last-second throw by Roger Staubach, then as a fourth-quarter rally by Dallas fell short on an onside kick. The Cowboys won Super Bowl 
Title: History of the Dallas Cowboys
Content:  Chuck Howley, who intercepted two passes and forced a fumble in Super Bowl V, became the first defensive player to win the award.) ; The first NFL team to win the Super Bowl after losing it the previous year. After losing Super Bowl V following the 1970 season, they won Super Bowl VI following the 1971 season.  The only other two teams to do this are the Miami Dolphins, who followed up their Super Bowl VI loss to the Cowboys by going undefeated and untied the next season, capped off by a 14–7 win against the Washington Redskins in Super Bowl VII, and the New England Patriots, who followed up their 41–33 loss 

Question: when was the last time the dallas cowboys won the superbowl?
Answer: Super Bowl XXX.