Key limes are smaller, yellower cousins to the bigger, darker green Persian limes you usually see in the grocery store. They’re more tart, with fragrant, floral juice and used to be grown widely in the Florida Keys, where cooks invented key lime pie as a way to use the juice.
To make these key lime bars, you don’t actually need key limes. They can be hard to find and are so small that you’d have to squeeze 20 of them to get 1/3 cup of juice!
Dwayne “The Rock” Johnson attends a press conference to announce that MetLife Stadium will host WWE Wrestlemania 29 in 2013 at MetLife Stadium on Feb. 16, 2012 in East Rutherford, New Jersey. Michael N. Todaro/Getty Images/TNS
One of the most attractive aspects of making a cake with oil rather than butter is the way it expedites the mixing process: There's no waiting for butter to come to room temperature and then beating it with sugar before you even start to add the rest of the ingredients. The batter is ready to go into the oven in 5 minutes flat, and the cake comes out just 40 minutes later.