Step 2

Make the crust: Preheat the oven to 350º. In a medium bowl, stir together all the crust ingredients until incorporated. Press the mixture evenly on the bottom and up the sides of a 9-inch pie plate. Bake until the crust is set, 10 to 15 minutes. Let cool.

Step 3

Make the filling: In a medium bowl, whisk together the egg yolks and sweetened condensed milk until smooth. Add the remaining filling ingredients and whisk until smooth. Pour into the cooled pie shell, return to the oven and bake for 20 minutes. Remove from the oven and let cool completely, then chill overnight.

Step 4

The next day, make the topping: In a medium bowl, using an electric hand mixer, beat the egg whites until soft peaks form. In a small saucepan, combine the sugar and water over medium-high heat. Bring to a boil and cook until the syrup has reached 240º. With the mixer's motor running, slowly pour in the sugar syrup and continue to beat until stiff peaks form and the meringue has cooled completely, 5 minutes. Spoon onto the center of the pie and torch until golden. Garnish with more Key lime zest, then slice and serve.