Sassy sisters Marilyn and Sheila Brass learned the basics of baking as children growing up in their mother's kitchen. One-hundred fourteen years of combined cooking experience later, they find themselves with thousands of collected recipes and a James Beard nomination for their cookbook Heirloom Baking. One of the tasty dishes from this award worthy book is their classic Pineapple Upside Down Cake. The fun loving Brass Sisters are all set to put their culinary skills on display, but when Chef Bobby Flay challenges the ladies to a Throwdown, will he be able to surprise the sisters with his own succulent version of this classic cake? Stay tuned for a Throwdown that will turn the competition upside-down!