01 -
Combine ground beef, ground pork, breadcrumbs, Parmesan, parsley, garlic powder, onion powder, salt, and pepper in a large bowl. Mix uniformly.
02 -
Form mixture into small meatballs approximately 2.5 centimeters in diameter and arrange on a tray.
03 -
Heat olive oil in a large pot over medium heat. Add meatballs in batches and cook until browned on all sides, about 5 minutes. Remove and set aside.
04 -
In the same pot, add onions, carrots, and celery. Cook until softened, approximately 5 minutes.
05 -
Pour in chicken stock and bring to a boil. Return meatballs to the pot, reduce heat to a simmer, and cook for 20 minutes.
06 -
Add acini di pepe pasta and continue to cook for 10 minutes or until pasta is tender.
07 -
Stir in baby spinach and lemon juice. Cook until spinach is wilted, about 2 minutes.
08 -
Adjust salt and pepper to taste. Serve hot, garnished with extra Parmesan cheese.