Spray The Inside Of A Slow Cooker With Cooking Spray. Stir Together Cream Of Chicken Soup, Water, Milk, Long Grain And Wild Rice Mix (Including Seasoning Packets, If Any), And Baby Carrots In The Slow Cooker. Place Chicken Breasts On Top Of The Mixture. Cover And Cook On High Until Chicken Is Cooked Through And Rice Is Tender, About 5 Hours; Or Cook On Low Setting For 7 To 8 Hours.