Give someone the luck of the Irish blessing with this Shamrock Sensation St. Patrick's Day Cake. Featuring a lucky horse shoe and a green shamrock mae of heart-shaped cakes, this St. Patrick's Day dessert can also be used to wish someone good luck on a new adventure. An easy project for intermediate decorators, this festive green dessert can be made using your favorite cake recipe and a 12 in. x 2 in. square pan.