The turkey burger patties can be made up to 1 day ahead of time before cooking. The cooked burgers also reheat well. For the best results, reheat in a skillet over medium heat until warmed through. You can also reheat in the microwave. You can also freeze the raw or cooked patties. To use frozen raw patties, I prefer to let them thaw prior to cooking so they will cook evenly, but you can add them straight to the grill if needed.