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, garlic powder and pepper. Stir in mushrooms, raw chicken, and uncooked pasta.

Step 3

Transfer mixture to prepared baking dish. Cover tightly with foil and bake for 35-40 minutes (until pasta is almost tender).

Step 4

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

Step 5

Let the dish stand for about 5 minutes before serving.