Preheat oven to 400 degrees F.
Coat a baking sheet with cooking spray and set it aside.
Add all the ingredients to a large bowl, except meat, and combine.
Add ground beef and pork and combine with your hands or a spatula. Do NOT overmix.
Roll about two tablespoons of the beef mixture into a 1-inch ball. Repeat this with the rest and arrange it onto the prepared baking sheet.
Bake for about 25-30 minutes. The internal temperature of the meat should be 165 degrees F.
Remove from oven and let them rest for 5-10 minutes before serving.
Serve them on pasta with marinara sauce, or make subs.
