In a large mixing bowl, combine the ground beef and ground turkey.
Add the breadcrumbs, chopped onion, minced garlic, grated carrots, and chopped celery to the meat mixture.
In a separate bowl, whisk together the milk, eggs, ketchup, Worcestershire sauce, thyme, smoked paprika, salt, and pepper.
Pour the wet ingredients into the meat mixture and combine everything thoroughly using your hands or a spoon until well blended.
Shape the mixture into a loaf and place it in a lightly greased loaf pan or a baking dish.
Spread a thin layer of ketchup over the top of the meatloaf for added flavor and a nice glaze.
Bake in the preheated oven for 1 hour or until the internal temperature reaches 160°F (70°C).
Let the meatloaf rest for 10 minutes before slicing to allow the juices to redistribute.
Garnish with chopped fresh parsley before serving.
Notes
Serve the slices on a warm plate alongside creamy mashed potatoes and steamed green beans for a classic homestyle meal. You can drizzle some additional ketchup on the plate for color and flavor contrast.