Add all the vegetables, canned tomatoes, and seasonings to the slow cooker. (wait to add the zucchini).
Pour over the chicken broth and stir.
Place the lid on the slow cooker and cook on LOW for 8 hours.
When the cooking time is up, add the sliced zucchini and cook for 30 minutes longer (on high).
Stir, serve and enjoy!
Video
Notes
Variations:
Vegetable broth works as a substitute, but chicken broth will give the soup more flavor.
Feel free to use your favorite veggies! You can swap some out or add extras like spinach, kale, bell peppers, mushrooms, cauliflower, broccoli, or even diced sweet potatoes.
Looking to add protein? Toss in chicken breasts, cooked ground beef, or ground turkey at the start of the cooking time. You can also mix in beans, like cannellini, for a hearty boost.
Frozen vegetables are a great option too!
Serving ideas to make the soup less boring later in the week:
Add a couple of dashes of hot sauce such as Tabasco or Tapatio.
Stir in leftover rice or quinoa.
Add a couple dashes of Parmesan.
Serve with a few saltine crackers or oyster crackers.
Stir in a touch of pesto.
Other notes:
Five days is the max I would keep this soup in the fridge. If you want to store longer consider freezing.
You can freeze this soup, but of course, the texture may change a bit when thawed.
Reheat individual portions in the microwave or you can reheat in a saucepan on the stove.