Spurs earned a 3-0 win at the Liberty Stadium and booked their place in the semi-finals of the FA Cup where they face Manchester United.
Crooks, the former Spurs forward, was particularly pleased with the performance of the Danish midfielder against Swansea.
The 26-year-old is enjoying a superb campaign for Spurs this season, having managed seven goals and further laying off eight for others in the Premier League.