I use the Flora Proactive brand in my cooking, there's one that is labelled "buttery" which is specifically for that purpose. It is very expensive at $7 a tub but I have found that I usually only need half the amount of butter that is stated in most recipes. My biggest complaint with the Masterchef type shows is how much butter they use in their cooking demos, I am sure healthier oils could be substituted in most cases.
Make sure you buy it when it's on special. That helps a bit.
Where do you buy coconut oil Kath?
I know we keep debating this on the forum but I just have to add there is significant research to suggest that butter is by far the healthier alternative. It is a fat, but a good nourishing fat that enables your body to better absorb the nutrients in the food (particularly vegetables) we eat. I think the problem is the quantity that it is used in recipes (especially in things like pastry) and the fact that the modern lifestyle is very inactive. Just my thoughts though.