It took about 2 1/2 hours for the cookies to bake completely. I ended up opening the car door shortly before the end of the baking period to check for doneness. This check has to be done manually, as there are no color indicators (such as brownness) to judge by because the sugar in the car cookies does not caramelize and brown like that of oven-baked cookies. So, I gently pressed the edges of the cookies to feel that they were firm and even more gently touched the center of one of the cookies to see that it held together and was not gooey (the center of the cookie should not be entirely firm, unless you are shooting for a crispy cookie). Finally, I slid one of the cookies around on the parchment paper - a good test for this type of baking because a baked cookie will release easily from the paper, while an unbaked cookie will stick in place. If your cookies are not done, add more baking time in 15 or 30 minute increments, as opposed to the 30 second or 1 minute increments you might add to an oven-baked cookie.Car-Baked Chocolate Chip Cookies, step by step September 4 (via Making Light
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.