Begin preparing the meatballs by adding all meatball ingredients except olive oil to a large bowl.
Knead everything together with your hands
Pinch off a tablespoon worth of meatball mixture and roll into balls
In a large skillet over medium-high heat, heat olive oil. Add some of the meatballs to the pan, only as many as will fit without touching, and cook for 4-5 minutes , flipping halfway through
Cook remaining meatballs and set aside.
In a large soup pot over medium-high heat, heat 1 tbsp. olive oil and saute onions, carrots, and celery until tender.
Stir in minced garlic and cook for another 30 seconds
Add the chicken broth to the pot and bring to a boil. Add pasta and meatballs, reduce heat to medium, and cover. Cook for about 10-12 minutes.
Stir in spinach and let cook until spinach wilts. Serve hot!