Philadelphia Cream Cheese has a new product called Cooking Creme. It's supposed to give foods the same effect as adding heavy or whipping cream but 60% less fat. It's brand new on the shelves so there will probably be some nice introductory sales on it.
Plus you can get a coupon for $1.50 off one tub of it. If you use zip code 93035, click on "Food" and for me it was at the bottom of the second page. You should be able to print it twice.