• Place egg, parsley, Worcestershire sauce, garlic powder, onion powder, salt and pepper in a large bowl. Mix with a fork to combine.
• Add the ground turkey to the bowl and mix gently with the fork until just combined, being careful to not overwork the meat.
• Divide the turkey mixture into 4 equal parts and shape into patties that are about 1/2-inch thick.

To Cook Turkey Burgers on the Grill:

• Freeze turkey burger patties in a single layer in a baking dish lined with parchment paper for 30 minutes to help them hold together on the grill.
• Meanwhile, heat an outdoor grill with clean grill grates to medium-high heat. Oil the grill grates well to keep the burgers from sticking.
• Cook burgers about 5-6 minutes per side until cooked to an internal temperature of 165° F. Do not flip the burgers too early when cooking on the first side or they may fall apart.

To Cook Turkey Burgers on the Stove:

• Heat a grill pan or skillet, such as a cast iron skillet, over medium heat. Add about 1 tablespoon of oil to the pan and spread it around.
• When the pan is hot, place the turkey burger patties in the pan. Cook about 5-6 minutes per side, until cooked to an internal temperature of 165° F. The burgers should release fairly easily from the pan when they are ready to flip to the second side.

To Cook Turkey Burgers in the Oven:

• Preheat oven to 400° F. Line a rimmed baking sheet with parchment paper and place turkey burger patties on the pan.
• Bake for about 20 minutes, flipping once after 10 minutes. Turkey burgers are done when they reach an internal temperature of 165° F.