Crisco makes Butter Flavored Vegetable Shortening Baking Sticks. I use it for any cookie recipe that calls for shortening. If the recipe doesn't specifically call for shortening then I use butter. Do I get a batch of those Molasses cookies for finding this info for you?
http://www.crisco.com/products/bakin...rtening-17-851
Here's what I found about substituting butter for shortening:
http://www.bhg.com/recipes/how-to/bake/how-to-substitute-butter-for-shortening-when-baking/