01 - Preheat oven to 375°F. Line a baking sheet with parchment paper or lightly grease a loaf pan.
02 - In a large bowl, combine ground turkey, breadcrumbs, milk, egg, onion, garlic, Parmesan, parsley, Italian seasoning, salt, pepper, and 2 tbsp ketchup. Mix until just combined—do not overmix.
03 - Shape the mixture into a loaf on the prepared baking sheet or transfer to the loaf pan, smoothing the top.
04 - Spread ¼ cup ketchup evenly over the top of the loaf.
05 - In a separate bowl, mix together grated Parmesan, panko breadcrumbs, and melted butter until the mixture resembles coarse clumps. Sprinkle evenly over the top of the ketchup layer.
06 - Bake for 50 minutes, or until the internal temperature reaches 165°F and the crust is golden brown.
07 - Let meatloaf rest for 10 minutes before slicing. Garnish with extra parsley if desired and serve warm.