Preheat your oven to 350°F (175°C).

In a small bowl, combine 2 tablespoons of ketchup with Worcestershire sauce, stirring well.

Heat olive oil in a small skillet over low heat and sauté the minced onion for 3-5 minutes.

In a medium mixing bowl, combine ground turkey, sautéed onion, breadcrumbs, egg, 1/4 cup ketchup, salt, and marjoram. Mix gently.

Transfer the meat mixture to a loaf pan, shape into a loaf, and spoon the reserved ketchup mixture over the top.

Bake in the preheated oven for 55-60 minutes, checking for an internal temperature of 160°F (70°C).

Let the meatloaf rest for about 5 minutes before slicing.