Josie Bothun recorded her fifth shutout of the season and Kiara Zanon grabbed three points in a one-sided shutout.
After going down early, Penn State was able to right the ship and claim the lead in a gritty game.
The Nittany Lions leaped out to a 3-0 lead and were able to hang on through pressure for the 3-2 win.
The Nittany Lions stayed focused through two called-off goals and got the comeback win against the Spartans.
Julie Gough scored two goals in the victory.
The Nittany Lions held their opponent to 15 shots in their ninth win of the season.