Preheat oven to 350 degrees.
Cook macaroni according to package directions; drain.
In a bowl, stir milk into soup. Add chicken, half of the cheese, mushrooms and cooked macaroni; mix well.
Turn mixture into a 2 qt. casserole that has been sprayed with non-stick cooking spray. Bake, covered, for 50 minutes. Uncover and stir. Top with the remaining cheese; bake about 5 minutes longer or until cheese melts.
Nutrition Information:
276 cal., 5 g. fat, 2 g. fiber