I love crock pot recipes! Yum!
Another one I like too that is almost as quick as Stagebears -
boneless chicken breasts
3-6 cloves of garlic (depending of size and taste)
fresh rosemary of thyme ... or dried
some white wine
and some chicken broth
Then I cook it on high or low depending how much time I have. Sometimes I add tomatoes or veggies. I like flexibility.
I normally dip the chicken in flour mixed with salt/pepper first and quickly cook it in a pan to get it brown - I like the flavor, and the flour helps make a thicker sauce. But I hadn't thought of sour cream ... might have to try that.
Auburnchick -I've subed the cream or cream soup in things for a cream-ish sauce. I normally use milk that I thicken with a roux or slurry (where I mix a bit of flour with milk before adding to the warm milk), but I wonder if you couldn't do something similar with chicken broth or even Lactaid? Maybe you could use cornstarch to thicken the broth ... sort of like gravy?
Here's another idea too
HTH