01 -
Set the oven to 200°C (400°F) to ensure it reaches temperature while you prepare the meatball mixture.
02 -
Line a baking sheet with parchment paper for easy removal and cleanup.
03 -
Combine ground beef, breadcrumbs, egg, Parmesan, diced onion, minced garlic, Italian seasoning, salt, pepper, Worcestershire sauce, and milk (if using) in a large mixing bowl.
04 -
Gently mix with hands, a wooden spoon, or spatula until ingredients are just incorporated. Avoid overmixing for tender meatballs.
05 -
Portion the mixture into tablespoon-sized amounts and roll into balls, arranging them evenly spaced on the prepared baking sheet.
06 -
Place the sheet in the preheated oven and bake for 18–20 minutes, or until meatballs are browned and have an internal temperature of 75°C.
07 -
Remove meatballs from the oven and serve hot with preferred sauce or accompaniments.