This vegetable soup is hearty and healthy. It’s pretty basic and yet simple. You certainly could add other vegetables, like broccoli or cauliflower.
If you have chicken stock on hand, you can use that instead of (or along with) the bouillon cubes. The addition of dry mustard gives it a little snap. It’s a bit bland without it. You don’t need to add salt; the bouillon cubes make it plenty salty.