Italian Wedding Soup

Ingredients

• 1 large egg
• 1/2 pound ground beef
• 1/2 pound ground pork
• 1/2 cup Italian bread crumbs or panko
• 1/3 cup grated Parmesan
• 3 tablespoons fresh parsley, chopped
• 2 garlic cloves, minced
• 1 teaspoon dried oregano
• 1 teaspoon kosher salt
• 1/2 teaspoon black pepper
• olive oil, for forming the meatballs
• 3 tablespoons olive oil
• 1 large yellow onion, chopped
• 3 medium carrots, diced
• 2-3 large celery ribs, diced
• 2 large garlic cloves, minced
• kosher salt, black pepper
• 8 cups (2 quarts) chicken broth
• 1/2 cup acini di pepe, ditalini or orzo
• 3 cups baby spinach, packed
• grated Parmesan, for serving