If you’ve purchased your turkey burgers from a store, check the packaging instructions. If they can be cooked straight from frozen, you’ll find the instructions there.  Always follow the guidelines of the manufacturer, rather than anything you read on the internet. When I make my own turkey burgers and put them in the deep freeze, I always thaw them out first. Take them out of the freezer 24 hours before you plan to eat them, and put them in the refrigerator instead.  Make sure they’ve thawed completely, and put them in a container that will contain all the liquid that releases during the thawing process.  Have a read through my refrigerator hygiene guide for more tips on maintaining a well-organized - and safe - fridge.