In a large bowl, combine ground turkey with onion, Worcestershire sauce, ketchup, and salt
On a large plate, form meat into 4 patties
Spray a cooking pan with oil and place over medium high heat
Cook/grill patties for about 5 minutes and then flip and cook for another 6 minutes on the opposite side
Serve burgers with tomato, lettuce, onion and your preferred condiments (mayo, ketchup, mustard)
Turkey burgers, because they are so lean, can often stick to the pan - make sure you oil your pan or grill before cookingAlso note that a lot of ground turkey is not so lean. Opt for meat that is 93% lean or higher. I used 93% lean; extra lean is also available but I cannot vouch for how moist it would be when used in this recipe.