It's all of your favorite birthday-cake flavors rolled into one portable dessert to hand out at birthday parties, for gatherings, or as gifts. Pastry genius Duff Goldman found a way to use up leftover cake scraps by creating adorable cakes in mason jars, and he shared his recipe and technique with us. Prepare to be in sprinkle heaven.Subscribe to POPSUGAR Food!http://www.youtube.com/subscription_center?src_vid=wNSZWHtiGek&add_user=popsugartvyumVisit our website for more easy recipes and cooking tips!http://www.yumsugar.comAre we friends yet? Join us on Facebook!https://www.facebook.com/POPSUGARFoodGet the latest updates via Twitter!https://twitter.com/#!/POPSUGARFood