1. Preheat oven to 500 degrees F. Toss zucchini, onion, and corn with a very small amount of oil (just enough to barely coat veggies), and roast in oven until onions start to brown. I actually like mine a bit burnt. You could also grill them. Lightly oil a pan for enchiladas.
2. Turn down oven to 350 degrees F. Mix chik'n, chiles, onions, corn, zucchini, drained tomatoes, cumin, cilantro, beans, cumin, oregano, chipotle and salt. Stir in vegan sour cream.
3. Heat up a very small amount of oil in a pan and quickly saute each side of the corn tortillas, just heating through. (or warm in microwave)
4. Dip the tortillas in the enchilada sauce, stuff with filling and put them in prepared pan. Top with more sauce. Bake at 350 degrees F for about 30 minutes.
I topped mine with fresh tomato and green onion when they came out of the oven. This recipe would actually make 2 pans of enchiladas, but I love the filling so much, that I made 1 pan enchiladas, and use the rest of the filling for quesadillas, and a tasty southwest chicken salad. Roasting or grilling the vegetables is a bit of extra work well worth the time. It gives them so much more flavor.
Source of recipe: This recipe comes from http://veganschmeganz.blogspot.com/ [1] and is reprinted with permission.