Meatballs:

• 1 pound ground beef
• ¼ cup uncooked white rice
• 1 large egg
• 2 tablespoons chopped fresh cilantro
• 1 teaspoon ground cumin
• 1 teaspoon garlic powder
• ½ teaspoon onion powder
• 1 teaspoon salt
• ½ teaspoon black pepper

Soup:

• 1 tablespoon olive oil
• 1 small onion, chopped
• 2 cloves garlic, minced
• 2 carrots, peeled and sliced
• 2 celery stalks, sliced
• 1 zucchini, chopped
• 1 (14.5 oz) can diced tomatoes
• 6 cups beef broth
• 1 teaspoon dried oregano
• 1 bay leaf
• ¼ teaspoon crushed red pepper flakes (optional)

For Serving:

• additional chopped cilantro
• lime wedges