Preheat the oven to 420°F.
Put all of the ingredients into a large bowl. Mix thoroughly until everything is evenly distributed throughout the turkey.
Take a large fistful of the mixture and roll it into a ball. Flatten it into a patty approximately 1 ½ inches thick. Continue with the remaining mixture until you have 5 evenly sized patties.
Press a shallow indentation into the center of each patty with your thumb. This helps keep the burgers from puffing up into a dome during cooking.
Heat a large oven-safe nonstick skillet over medium-high heat. Lightly coat the skillet with olive oil spray, then place the patties in the hot skillet.
Cook the burgers for 3 to 4 minutes on the first side, until the edges are browned and seared. Turn the patties over.
Cook for 1 additional minute, then transfer the skillet to the oven. Continue cooking for 9 to 11 minutes, until the burgers reach an internal temperature of 165°F.
Alternatively, place the patties on a baking sheet lined with parchment paper or aluminum foil and bake for 8 to 10 minutes.
Serve the burgers on toasted whole wheat buns with butter lettuce, cucumber slices, thin red onion slices (optional), sliced tomato, and a little Greek yogurt instead of mayo. They can also be served with salad, rice, quinoa, or roasted vegetables.