Full of flavor and plenty of veggies, this easy vegetable soup is a great way to clear out some space in your produce drawer. This recipe is flexible enough that you can make ingredient changes based on what you have on hand. You could also very easily make this a vegan stew by swapping out the butter for oil. Be sure to defrost the frozen items and drain off any liquid that accumulates during defrosting time you don't water down the stew. Because this recipe makes a large amount of stew, consider freezing half for later.