Prepare all the materials.
In a large bowl, combine together all of the meatballs ingredients.
mix well and form little tiny meatballs. Set aside.
Put mealballs in oven at 200 ℃ for 30 minutes.
In a large pot over medium high heat, cook together the chopped onion, carrots, celery and garlic in the olive oil, season with salt and pepper and cook for about 5 minutes. Add the chicken stock and bring to a boil.
Add the meatballs and cook for about 10 minutes. Add the pasta and cook according to packaged direction. 2 minutes before the pasta is cooked, add the spinach and cook for a couple minutes.
Season with salt and pepper to taste and turn the heat off. Right before it’s served, add the ½ tsp of grated lemon zest and fresh chopped parsley.