Preheat your oven to 350°F (175°C).
In a large bowl, combine ground beef and ground pork.
Add breadcrumbs and chopped onion to the meat mixture.
Pour in milk and add eggs; mix until well combined.
Stir in ketchup, Worcestershire sauce, garlic powder, salt, and pepper.
Shape the mixture into a loaf and place it in a baking dish.
Spread additional ketchup on top for a 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.
Serve warm and enjoy!