DIY Philly Box

225 gms Sliced Tenderloin , Cheese Sauce, Sliced Onion, SPG Seasoning, Jalapeños, Soft Philly Bun. A cheesesteak is a sandwich made from thinly sliced pieces of Tenderloin steak and melted cheese in a long sub roll. A popular regional fast food, it has roots in the U.S. city of Philadelphia.