Kubiak was Minnesota's assistant head coach and offensive advisor during the 2019 season.
The year after winning the Super Bowl in 2015 as the Denver Broncos' head coach, Kubiak stepped down due to health reasons. He spent two years in an advisory role in Denver before joining Minnesota.
Vikings head coach Mike Zimmer had high praise for Kubiak during the season.
"Gary has been tremendous,” Zimmer said in November, per Chris Tomasson of the Pioneer Press. "It's probably the best thing that’s ever happened to me since I’ve been here. He's very smart. I talk to him a lot about what he's done as a head coach. … I just love his demeanor and the way that he and Kevin can communicate during the games and also during the week on game plans."
Kubiak will take over the offense in a critical season for Minnesota. Quarterback Kirk Cousins will be in the final season of the fully guaranteed three-year, $84-million contract he signed as a free agent.
The Vikings ranked eighth in scoring, ninth in third-down percentage, and 16th in yards during the regular season.
Cousins and Co. racked up 362 yards of offense during a shocking wild-card win over the New Orleans Saints. However, the unit was dominated by the San Francisco 49ers in the next round. Cousins was sacked six times and the offense produced just 147 yards in the 27-10 loss.