My cookies are always flat and I always blamed the ingredients or user error. Today as I baked 4 varieties of Christmas cookies, I figured out the problem!
I was using several cookies sheets to speed up the process when I discovered there was definitely a difference between the two types I was using.
To make a long story, I highly recommend the following:
From Bed, Bath and Beyond, they have a large cookie sheet (more like a jelly roll pan with sides) called Indulgence (by Wilton).
They truly make all the difference. They bake the cookies fast, so you may need to shorten your baking time by a minute or two. (I have a gas oven if that matters to you.) You don't even need a spatula to get them off the pan, except for the fact that they are hot. They wash easily and they cool quickly. I ran out in between batches to buy two more (now I have 3) and my old ones are history (free to a good home!)
http://www.bedbathandbeyond.ca/product.asp?order_num=-1&MC=1&SKU=14748490&RN=4870&
