Heat the oil in a skillet over medium heat. Add the spinach and cook until wilted, 2-3 minutes. Transfer the spinach to a large bowl and add the ground turkey, feta, basil, oregano, garlic powder, and a pinch of salt. Use your hands to mix until everything is well combined.

Form the mixture into the number of patties specified in the recipe’s serving details.

Heat a nonstick skillet over medium heat and lightly coat with cooking spray. Add the patties and cook for about 4 minutes per side, or until fully cooked and no longer pink in the center.

To serve, place each patty on a bottom bun, top with tzatziki, and finish with the top bun. Serve.