Chop the onion into small pieces then whisk the eggs.
Preheat oven to 400°F (204°C).
In a large bowl, add your ground meat, then add all your other ingredients, grating your garlic into small pieces.
Gently fold the ingredients into the meat until completely incorporated. Stop as soon as everything has come together.
Use about 1 and ½ tablespoons of meatball mix for each meatball. Gently roll the mix creating a loose ball.
Place each ball about 1 inch apart on an aluminum foil-lined baking sheet.
Bake at 400°F (204°C) for 20-25 minutes, until cooked through with a golden brown exterior. The cooked meatballs should reach an internal temperature of 165°F (74°C).