Preheat an outdoor grill for medium-high heat and lightly oil the grate.

Combine ground turkey, black beans, Parmesan cheese, bread crumbs, egg, and onion soup mix in a large bowl with your hands. Divide into 6 portions; shape into patties.

Cook on the preheated grill until no longer pink in centers, 5 to 6 minutes per side. An instant-read thermometer inserted into centers should read at least 165 degrees F (75 degrees C).