If you don't want dry, crumbly burger patties, you need to add the right amount of moisture and cook them just right. Be sure to follow the recipe carefully. Don't skip any of the binders or liquid ingredients, as these are specially formulated to get you the best results. Lean ground turkey will have less moisture, so you may want to consider using a heartier cut like ground turkey thighs. Most importantly, cook the patties quickly at a high heat. The longer they sit on the grill or in the pan, the drier they'll get. Cook them hot and fast for the best, most tender turkey patties.