In a large heavy pot, stir together all the ingredients except the ingredients for serving.
Bring to a boil, then reduce heat and simmer, covered, for about 20 minutes, or until the vegetables are tender.
Heat the tortillas in foil in the oven or wrapped in a dish towel in the microwave.
To serve, sprinkle some cheese on a warm tortilla, spoon some of the vegetable mixture down the center of the tortilla, top with some chopped tomatoes and a dollop of sour cream and roll up like a burrito.
Notes
*You can also serve it Indian style in bowls along with naan to scoop it out. We top with yogurt and tomatoes when we eat it this way. Choices, choices (hint: both are great!).