I made meatloaf for dinner

Ingredients:
1 lb ground beef
1/2 cup breadcrumbs
1/2 cup milk
1 egg
1/2 onion, chopped
1 tsp salt
1/4 tsp black pepper
2 tbsp ketchup
Instructions:
Preheat oven to 350°F (175°C).
In a large bowl, mix together the ground beef, breadcrumbs, milk, egg, chopped onion, salt, and black pepper.
Transfer the mixture to a loaf pan, and shape it into a loaf.
Spread ketchup over the top of the meatloaf.
Bake for 1 hour, or until the internal temperature of the meatloaf reaches 160°F (71°C).
Let the meatloaf cool for a few minutes before slicing and serving.