Sarah Kieffer is an American baker, photographer, and cookbook author best known for her unique approach to cookies and baked goods. She gained popularity in the baking community with her innovative 'pan-banging' cookie technique, which involves banging the cookie sheet in the oven during baking to achieve a distinctive rippled edge. This method became widely shared on social media and is a signature feature of her acclaimed book "The Vanilla Bean Baking Book". Kieffer's recipes and photographs have been featured in various publications, and she has been praised for her accessible, comforting baking style that encourages both novices and experienced bakers alike. She also shares her baking insights and recipes on her blog, The Vanilla Bean Blog, which is beloved for its beautiful photography and thoughtful content.