Preheat your oven to 375°F, setting the stage for perfect baking.
In a large bowl, combine the ground beef, ground pork, breadcrumbs, milk, eggs, chopped onion, minced garlic, Worcestershire sauce, Dijon mustard, salt, and pepper.
Mix well to ensure everything is evenly distributed.
Shape the meat mixture into a loaf and place it on a baking sheet.
Let it rest while you prepare the glaze.
In a medium bowl, mix together the ketchup, brown sugar, and apple cider vinegar.
Whisk until smooth, then spread the glaze evenly over the meatloaf.
Bake the meatloaf in the preheated oven for 1 hour or until the internal temperature reaches 160°F.
Allow it to rest for 10 minutes before slicing.