How to Make It
Combine first 5 ingredients in a large bowl; shape mixture into 30 (1 1/2-inch) meatballs.
Combine ketchup, sugar, juice, and sauces in an electric slow cooker; gently stir in meatballs. Cover with lid; cook on low-heat setting for 8 to 10 hours. Garnish with parsley, if desired.