Cookie-Making: Butter vs Shortening

 

I don't bake with shortening.  Even if a recipe calls for shortening, I use butter instead.  But a friend gave me a chocolate chip cookie recipe that called for shortening, saying that it was the secret ingredient.

I read up on the differences in cookie results between baking with butter and shortening, and I think for a better comparison, I would need to taste the cookies side by side, but I was very impressed with how yummy the cookies turned out.  

I still have my go-to chocolate chip cookie recipe (that uses butter), and I'm also still on the search for THE recipe, but I'm always game to try new recipes.

Do you use butter or shortening in your cookies?