
Butter and only butter - I hate margarine.

-----------------Both. And there is a difference in baking.
I do like butter better ( I can TASTE a difference)
Butter. Margarine is an abomination in the eyes of the Lard.

--------------------------butter only.....
and in case you've seen that email floating around the net about 'butter vs margarine', here's a site to separate the facts from the fiction:
http://www.truthorfiction.com/rumors/b/butter-margarine.htm

But when baking, I would be receiving such a very small amount of the butter or margarine (contained within my portion of the baked item) I don't think I would be terribly concerned about it..
Butter. Margarine is an abomination in the eyes of the Lard.