Are you hoping to bake a slightly thicker, chewier cookie than the usual Tollhouse recipe? After tinkering with the classic, I pulled a tray of perfect cookies out of the oven. They don't spread as much as the Tollhouse variety, so they're tender all the way through. Don't be scared off by the shortening that is used in place of butter: that's what keeps these chippers so nice and soft. Last night was the third time I've made them, and everyone who has eaten one comments that these are the best tasting, and looking, chocoloate chip cookies they've ever eaten. I tend to agree!