1. In a large bowl, mix breadcrumbs and milk. Let sit 2-3 minutes until the milk is absorbed. Add ground beef, ground pork, eggs, parmesan, parsley, onion, garlic, Italian seasoning, salt, and pepper. Mix gently until just combined. Shape mixture into 1- to 2-tablespoon-sized balls and place on a tray. (Optional) Brown meatballs in a skillet with a little oil for extra flavor, turning until golden all over. Transfer meatballs to the crockpot. Pour marinara sauce over the top and stir gently to coat. Cover and cook on low for 4-6 hours or high for 2-3 hours, until meatballs are tender and fully cooked. Serve hot, garnished with parsley or extra parmesan. Enjoy over pasta, in subs, or as an appetizer!