Wash hands with soap and water for 20 seconds.
Scrub the onion, carrot, and avocado with a clean vegetable brush under cold running water. Gently rub tomatoes under cold running water.
Prepare vegetables and beans as directed in ingredients.
Heat canola oil in a pot. Cook diced onion and sliced carrot for 5 minutes. Add drained black beans, diced tomatoes, chicken broth, cumin, and thyme. Simmer 20 minutes.
Serve with diced avocado.
Tip: you can substitute canned, diced tomatoes for the fresh tomatoes - just be sure to get the no-sodium variety!