Creamy Italian Chicken and Rice

I got this recipe from my sister Emily. This is one of our favorite crock pot dinners.

Creamy Italian Chicken and Rice
3 or 4 chicken breasts
1 pkg. dry Italian dressing mix
1/2 cube margarine
1 (8 oz.) pkg. cream cheese
1 can cream of chicken soup
Rice*

Put chicken, margarine and dressing into crock-pot. Cook on high 3 hours. Take chicken out and chunk. Return to pot. Cut cream cheese into chunks and put on top of chicken. Pour in soup diluted with 1/2 can milk. Stir together and cook another 45 minutes to 1 hour. Serve over rice.
*You can use minute rice. Just add rice when you add cream cheese and soup. Increase milk to 1 full can.