01 - Preheat oven to 350°F. Line a loaf pan with parchment paper or lightly grease the interior surface.
02 - In a large mixing bowl, combine breadcrumbs and milk, allowing to soak for 2 minutes until softened.
03 - Add ground turkey, egg, onion, garlic, carrot, parsley, salt, pepper, thyme, Worcestershire sauce, and ketchup to the breadcrumb mixture. Gently combine until just incorporated, avoiding overmixing.
04 - Press the mixture evenly into the prepared loaf pan and smooth the top surface.
05 - Bake for 55 to 60 minutes until the internal temperature reaches 165°F and juices run clear. Allow to rest for 10 minutes before slicing.
06 - In a medium saucepan, melt butter over medium heat. Whisk in flour and cook for 1 to 2 minutes until lightly golden. Gradually whisk in broth while stirring constantly. Add onion powder and garlic powder. Bring to a simmer, stirring frequently, until thickened, approximately 5 minutes. Season with salt and pepper to taste.
07 - Slice the turkey loaf and serve warm with gravy spooned over each portion.