01 - In a mixing bowl, gently combine ground turkey, finely chopped onion, minced garlic, chopped parsley, Dijon mustard, salt, and black pepper without overworking the mixture.
02 - Divide the mixture into four equal portions and shape each into a patty slightly larger than the burger buns.
03 - Heat olive oil in a large skillet or grill pan over medium heat. Cook the patties for 5 to 6 minutes per side until browned and an internal temperature of 165°F is reached.
04 - During the last two minutes of cooking, top each patty with Brie slices. Cover the pan or tent loosely with foil to allow the cheese to melt evenly.
05 - Toast the burger buns until golden and slightly crisp.
06 - Place a handful of arugula or baby spinach on the bottom half of each toasted bun. Add the turkey patty with melted Brie, spoon over cranberry sauce, and finish with the top bun.
07 - Serve immediately while warm for optimal flavor and texture.