In a large mixing bowl, combine the ground turkey, finely chopped onion, minced garlic, fresh parsley, Worcestershire sauce, Dijon mustard, salt, black pepper, and optional smoked paprika. Gently mix until just combined.

Divide the mixture into four equal portions and shape each into a patty about ¾ inch thick.

Preheat your grill to medium-high heat or skillet over medium heat, adding a thin layer of oil.

Place the formed patties on your preheated grill or skillet. Cook for 5–7 minutes on each side or until golden brown and internal temperature reaches 165°F.

If desired, add sliced cheese on top of each patty during the last minute of cooking and cover briefly.

Lightly toast the burger buns on the grill or in a toaster for about 1–2 minutes until browned.

Place the cooked patties on the toasted buns, then layer with fresh lettuce, tomato slices, and any desired condiments.

Serve immediately, while hot and juicy.