Freshman goalie Ben Swanson stopped all 24 shots he faced to earn the shutout.
Isaac Young scored the first goal of the game at 2:32 of the opening period, assisted by Kaden Peterson.
Maveric Kalenberg scored at 9:47 of the second period, from Cole Wentworth, giving the Otters a 2-0 lead.
The Otters erupted for five third period goals, starting when Cole Zierden buried the puck at 1:26 of the period. He was assisted by Logen Schake and Isaac Young. An Isaac Johnson power play goal at 3:36 was unassisted and gave the Otters a 4-0 advantage. Peterson notched a power play goal from Michael DeBrito at 4:56 and Andrew Johnson scored from Isaac Johnson and Schake at 6:29. The final goal came on the power play from Wyatt Goetz, assisted by Hayden Shol.
The win was the sixth in a row for the Otters who are now 10-9-1. They will play at Little Falls on Tuesday night.