Steen, who missed the first six games of the season with a broken thumb, busted out with a goal and three assists on Wednesday to help the St. Louis Blues to a 5-2 win over the Calgary Flames.
Jaden Schwartz and Alex Pietrangelo scored second-period power-play goals and Jake Allen made 23 saves for St. Louis, which has won three of its last four, losing only to red-hot Vegas in overtime.
Calgary had won its first four road games this season. Mikael Backlund scored twice for the Flames.
Schwartz and Pietrangelo scored in a span of 2:46 to break a 1-1 tie. The Blues had come up empty on their previous 18 power-play chances.
Paul Stastny scored with 3:32 left to push the lead to 4-2. Joel Edmundson added an empty-net goal with 43.9 seconds left.
Calgary goalie Eddie Lack made 24 saves in his first start of the season. He came into the game with a 6-0 career mark against the Blues.
The Blues play at Carolina on Friday.