I am so surprised that this recipe hasn't been posted yet! I've seen this recipe in so many books that it's a classic. This is easiest when made with a stand mixer. The recipe doubles nicely, in fact I rarely make a single batch. Make sure to use either parchment paper or better yet a Silpat or other silicone baking mat. You can roll them out the traditional way without the parchment but the method I use is much less mess and results in more tender cookies because no additional flour is added that could toughen them. There is no need to wash the mats between batches or change the parchment until you are done. If you own a Dobord this is the recipe to use it with. These are great glazed or not, decorated or not. If you are making 3D cookies or any shape that you don't want to spread too much you can leave out the baking powder. The yield is approximate as it really depends on the size of the cookies.