Here's the recipe that will ensure you never again bake FLAT cookies! Recipe and tips from my Aunt. *NOTE: My Aunt swears by melting the butter & shortening for a "better texture", but I'm removing that from the directions because I don't like the results. She also mixes by hand to prevent over-mixing, but I'm including the Mixer directions for those who prefer that. Basically the tips are: use a combo of butter and shortening, don't over-mix, keep everything cool, and don't over-bake.