A system and method for conditioning food product is disclosed. The method comprises providing a grill treatment to the food product; packaging the food product; and heating the packaged food product (e.g., partially or fully cooking the food product in its package). The system comprises an apparatus configured to apply a grill treatment to a food product that is being packaged and fully cooked in its package. The system may also comprise a co-extruder configured to extrude the a material layer and a collagen gel layer about the exterior surface of the base layer that is then at least partially coagulated before receiving the grill treatments.