Allen had two rushing touchdowns, which powered the Nittany Lions to a 27-6 victory over the Scarlet Knights.
After quarterback Drew Allar left the game with an injury, Beau Pribula stepped up for the Nittany Lions.
The Nittany Lions will be televised on FS1 for the first time all season.
The Scarlet Knights come to Beaver Stadium boasting a winning record and bowl eligibility.
The forward made his season debut against Michigan State last weekend, scoring a goal and adding an assist in the series.
The fall comes after the Nittany Lions' 24-15 loss to Michigan.