In a mixing bowl, combine ground beef, bread crumbs, egg, Cajun seasoning, and salt. Mix well and form into meatballs.

In a large pot, heat olive oil over medium heat. Add chopped onion and minced garlic, sauté until soft.

Add chicken broth, diced tomatoes, and mixed vegetables. Bring to a boil.

Carefully add meatballs to the pot. Reduce heat and simmer for 25-30 minutes until meatballs are cooked through.