Step 1

Heat oven to 375°F. Spray 13x9-inch (3-quart) glass baking dish with cooking spray.

Step 2

In large bowl, mix pasta, chicken, tomatoes, Alfredo sauce, water, Italian seasoning, garlic powder and pepper flakes. Pour mixture into dish. Cover tightly with foil. Bake 40 minutes.

Step 3

Remove dish from oven; stir mixture thoroughly. Add spinach, and stir until well mixed. Sprinkle with cheese.

Step 4

Bake uncovered 5 to 7 minutes or until pasta is tender and cheese is melted. Let stand 10 minutes before serving. Garnish with basil.