The Nittany Lions took just four shots in its fifth conference loss of the year.
The Nittany Lion win secured a series sweep against Stonehill as the team will now turn to Big Ten play.
The Nittany Lions move to 10-0 to start the season.
The Nittany Lions have won 35 straight matches over the Scarlet Knights.
Gavin McKenna scored his first goal at Pegula Ice Arena in the comeback victory.
The Nittany Lions scored four goals in the first five minutes.