Preheat oven to 350 degrees.
Combine the breadcrumbs and milk in a large mixing bowl. Let stand for about 5-10 minutes until the breadcrumbs are soggy.
Add the remaining ingredients to the bowl. Mix together until everything is thoroughly combined. You can use a spoon, but I think the best way to mix meatball ingredients without overmixing is to use your hands.
Prepare a baking sheet with cooking spray. Roll the meat mixture into approximately 1 ½ - inch balls. Arrange the meatballs on the baking sheet. You don’t have to worry about them spreading, but you also don’t want them touching.
Bake the meatballs for about 15-20 minutes until they are cooked through a no longer pink.