Combine ½ cup stock with mince, garlic, egg & breadcrumbs. Roll into balls.
Heat oil in a large frying pan. Add meatballs & cook until browned all over. Pour over remaining stock, tomato paste & rosemary. Bring to the boil, reduce heat & cook, covered, for 10 mins, stirring occasionally.
Stir in risoni & tomatoes. Cook for 8 mins, uncovered, stirring occasionally, or until pasta is al dente. Garnish with parsley & serve with steamed vegetables & parmesan.