01 -
Preheat the oven to 175°C (350°F).
02 -
Heat oil in a large skillet over high heat. Sauté onion and bell peppers until warmed through, about 2 minutes. Transfer to a large bowl.
03 -
Add condensed soups, diced tomatoes with chiles, chicken broth, sour cream, cumin, ancho chile powder, oregano, and chipotle chile powder to the vegetable mixture. Mix thoroughly until well-combined.
04 -
Spread a few tablespoons of sauce in the bottom of a 9x13-inch baking dish. Layer with half of the chicken, half of the sauce, half of the Cheddar cheese, and half of the tortillas.
05 -
Spread remaining chicken over the tortillas. Add all but 1/2 cup of the remaining sauce over the chicken, then top with another third of the Cheddar, and the remaining tortillas.
06 -
Spread the reserved 1/2 cup sauce over top, and sprinkle with the remaining Cheddar cheese.
07 -
Bake in the preheated oven until bubbling, about 40 minutes.
08 -
Switch to broiler mode and broil until the top is golden, 2 to 3 more minutes.
09 -
Serve hot immediately after removing from the oven.