Swirled or sprinkled, small or large, cupcakes are adored by adults and kids alike, the "it dessert" that makes everybody smile. In this episode, Martha shares four scrumptious cupcake recipes: blueberry swirl, lemon meringue with a toasted meringue topping, red velvet with cream cheese frosting, and one-bite double diablo cupcakes (for the unrepentant chocoholics in your life).