Italian Wedding Soup

INGREDIENTS

• :
• 1 pound ground beef
• 1 small onion, grated
• 4 tablespoons grated Parmesan cheese
• 2 tablespoons Italian bread crumbs
• 1½ teaspoons dried parsley
• 1 teaspoon dried basil
• 1 teaspoon salt
• 2 egg whites
• 1 pound boneless, skinless chicken breasts
• 2 tablespoons unsalted butter
• 1 small onion, diced
• ½ cup sliced carrots (approximately 2 carrots)
• ½ cup sliced celery (approximately 2 stalks)
• 1 clove garlic, minced
• 12 cups chicken broth
• Salt & pepper to taste
• ¾ cup acini di pepi or other small pasta
• 8 ounces fresh spinach, chopped