Preheat the Oven:
Preheat your oven to 375°F (190°C). Grease a loaf pan or line a baking sheet with parchment paper.
Prepare the Meatloaf Mixture:
In a large mixing bowl, combine the ground beef, breadcrumbs, eggs, onion, garlic, milk, Worcestershire sauce, salt, pepper, and parsley. Mix gently with your hands or a spoon until just combined. Avoid overmixing, as this can make the meatloaf dense.
Shape the Meatloaf:
Transfer the mixture to the loaf pan or baking sheet. Shape it into a loaf, about 8 inches long and 4 inches wide if using a baking sheet.
Prepare the Glaze:
In a small bowl, mix together the ketchup, brown sugar, and Dijon mustard. Spread half of the glaze evenly over the top of the meatloaf.
Bake the Meatloaf:
Bake in the preheated oven for 45–55 minutes, or until the internal temperature reaches 160°F (71°C).
Add the Remaining Glaze:
About 10 minutes before the meatloaf is finished baking, spread the remaining glaze on top. This helps it caramelize and adds extra flavor.
Rest and Serve:
Remove the meatloaf from the oven and let it rest for 5–10 minutes before slicing. Serve with your favorite sides and enjoy!