Place the meatballs in a large crock pot. Pour Bone Suckin’® Sauce , & Bone Suckin’® Sweet Spicy Mustard, over meatballs and stir together. Heat the meatballs in a crock pot for 2 hours on high, stirring occasionally. (If using frozen meatballs, cook for 4 hours.) Serve on bread. Add Cheese (optional). Enjoy ! Great crock pot recipe !