Step 1

Preheat oven to 425 degrees F. Spray an 8-inch square baking dish with cooking spray and set aside.

Step 2

In a large bowl, whisk together condensed soup, milk, chicken broth, thyme, salt and pepper. Stir in mushrooms, onion, raw chicken, and uncooked pasta.

Step 3

Transfer mixture to prepared baking dish. Cover tightly with foil and bake for 35 minutes.

Step 4

Remove foil and give everything a stir in the dish. Stir in sour cream, and sprinkle cheese over top. Return to the oven and bake, uncovered, for 5-10 more minutes, or until pasta is tender and chicken is cooked through.

Step 5

Let the dish stand for 5-10 minutes before serving.