Mix the ground turkey, breadcrumbs, parsley, parmesan cheese, Worcestershire sauce, ketchup, salt, and pepper in a large bowl.
Add the grated onion and let the mixture sit for 5-10 minutes for the flavors to meld.
Shape the seasoned mixture into four patties, each about 1/2 inch thick.
Make an indent in the center of each patty; this helps them cook evenly.
Heat the canola oil in a large skillet over medium heat.
Once the oil is hot, place the patties in the skillet.
Cook each patty for about 5-7 minutes per side, or until the internal temperature reaches 165°F.
Use a spatula to flip them carefully.
Let the cooked burgers rest for a few minutes before serving them with your favorite toppings and buns.