01 -
Preheat oven to 350°F (175°C). Line a baking sheet with parchment paper.
02 -
In a large bowl, combine ground beef, breadcrumbs, milk, egg, onion, garlic, salt, black pepper, and Worcestershire sauce. Mix thoroughly until just combined.
03 -
Take a golf ball-sized portion of the mixture and flatten it in your palm. Place 1 tablespoon of grated cheddar cheese in the center. Shape the meat around the cheese to seal and form a ball.
04 -
Place stuffed meatloaf balls evenly on the prepared baking sheet. In a small bowl, mix ketchup and mustard, then brush over the tops of each meatball.
05 -
Bake for 20–25 minutes or until the internal temperature reaches 160°F (70°C). Allow to cool slightly, then garnish with chopped fresh parsley and serve.