Preheat oven to 425 degrees. Set aside a large rimmed baking sheet.
In a large bowl, mix together all meatball ingredients. Your hands are the best tools for this, but don't overmix. Just mix until all ingredients are well combined.
Scoop portions the size of a golf ball or larger. Roll into balls between your palms. Place meatballs on rimmed baking sheet, spaced apart for even browning.
Bake for about 20-30 minutes, depending on the size, or until lightly golden brown and sizzling. For smaller meatballs, they should only take about 20 minutes, whereas larger ones will take 25-30.
Remove from the oven and use in any recipe you'd like.
Meatballs can be baked and frozen for up to two months.