Is the plastic tray safe to cook food in, specifically in a microwave? 18 April 2024 10:10 Updated Yes, the trays we use are BPA-free and have been tested to ensure they are safe. Related articles Are your COOK trays suitable for an air fryer? Are COOK plastic trays food safe? Are COOK meals ultra-processed? Can I still eat my COOK meal if the tray is cracked or broken? Can I still eat my COOK meal if the film has come off?