Step 1

Preheat oven to 350°F. Spray 13x9-inch glass baking dish with cooking spray.

Step 2

In large bowl, stir together chicken, onion, garlic salt, chili powder, soup and tomatoes.

Step 3

Layer one-third of the tortilla pieces in baking dish. Top with one-third of the chicken mixture and ⅔ cup of the cheese. Repeat layers twice.

Step 4

Bake uncovered 30 to 35 minutes or until bubbly.

Step 5

Serve.