To provide a food product molding device and a food product manufacturing method capable of molding foodstuffs into a food product having stacked plural layers with a simple structure. A mold unit in which a first mold plate and a second mold plate are stacked slidingly moves by a drive unit. Through holes respectively provided in the first mold plate and the second mold plate are linked to form molding hole portions. The molding hole portions move to a first filling position in which upper ends of the molding hole portions are connected to first filling openings, a second filling position in which upper ends of the molding hole portions are connected to second filling openings, and a discharge position in which upper ends of the molding hole portions are connected to pusher ports by the slide movement of the mold unit.