- Preheat the oven to 350?F. Coat a 9 x 13 baking dish with cooking spray.
- Combine the onions, pepper, salsa, chili beans, tomato sauce, soy crumbles, corn, olives, and chili powder in a large microwavable bowl; heat on high for 5 minutes.
- Spread about one quarter of the chili mixture on the bottom of the prepared baking dish. Top with 6 of the tortillas, overlapping and/or cutting to fit as necessary. Top with another quarter of chili mixture and a third of the cheese. Repeat for 2 more layers each of tortillas, chili mixture and cheese.
- Cover and bake for 30 to 35 minutes, until heated through. Garnish with tomatoes, olives and avocado, if desired.