Preheat your oven to 350°F (175°C).

In a large mixing bowl, combine the ground beef, finely chopped onions, breadcrumbs, milk, egg, Worcestershire sauce, paprika, salt, and pepper. Mix gently but thoroughly.

Transfer the mixture onto a clean surface or into a greased loaf pan and shape into a loaf.

Spread a layer of ketchup over the top of the meatloaf.

Place in the preheated oven and bake for 55-60 minutes, until the internal temperature reaches 160°F (71°C).

Let it rest for 10-15 minutes before slicing.

Slice and serve warm with mashed potatoes or steamed vegetables.