Does it matter what fat is used in cookies?

[True2marie]

My fat of choice for any baking project is real butter. However, I don't always have real butter in my fridge. So, does it really make a big difference if margarine or vegetable oil is used in a basic recipe for cookies?

 

[Christine Mlinek]

I would tend to think that if the recipe says butter or margarine you can sub but not veg. oil unless the recipe says so.

I have tried to sub Crisco shortening but found the cookies to be crisper and spread more for some reason.

 

[TheViper]

The only "fat" that I may use is coconut oil or olive oil. There are other oils that are healthy and great replacements from the so called "vegetable oils".