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? 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? Are COOK meals ultra-processed?