Step 1

In a large bowl, gently mix together the turkey, soy sauce, garlic powder and pepper until evenly combined. Work the meat as little as possible to ensure tender patties. Divide the turkey mixture into four portions about 4 ounces each. (Wet your hands with cold water or lightly rub them with oil to prevent sticking.) Flatten each portion into a disk about 5 inches in diameter and 1/4 inch thick.

Step 2

In a large (12-inch) cast-iron skillet over medium-high heat, heat the oil until shimmering. Working in batches, add the turkey patties to the skillet and cook, adjusting the heat as needed, until browned, 2 to 3 minutes. Flip, top with the cheese, if using, and cook until browned on the other side and the turkey is cooked all the way through (it should register 165 degrees on an instant-read thermometer), 2 to 3 minutes. Transfer to a platter, scrape the skillet to remove any browned bits or melted cheese, add more oil, if needed, and repeat with the remaining patties.

Step 3

Add 1 to 2 of the cooked burgers to the bottom of each bun, follow with your favorite toppings and cover with the bun tops. Serve hot.