Prep: Preheat oven to 375 degrees. Line a baking sheet with parchment paper and set aside.

Mix: In a large mixing bowl, combine the beef, breadcrumbs, cheese, onion, milk, herbs, salt, pepper, garlic, and egg. Use cleans hands to gently mix everything until well-blended. Be careful not to overmix -- meatballs would be tough.

Shape: Using a 2-tablespoon scoop (or 1-tablespoon scoop for smaller meatballs), portion out the meatballs and place them on the prepared baking sheet. After scooping, lightly oil your hands with olive oil to prevent from sticking, and roll into balls.

Bake: Bake for 20 to 22 minutes until the meatballs are browned and cooked through.